1978 Oldsmobile Cutlass Differentials

Show items:
Sort by:
    • (0 reviews)
      # 503467127
      Oldsmobile Cutlass with 10 Bolt 1978, Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent replacements for OE. Experienced installers prefer ring and pinions for easy setup, superior...
      Quiet operationComputer controlled heat treatment
      $199.86 - $251.95
    • (0 reviews)
      # 503391217
      Oldsmobile Cutlass with Open Differential 1978, No-Slip Traction System by Powertrax®. For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It...
      Extreme Traction PerformanceEnables a 2 Wheel Drive to outperform a 4 Wheel Drive in poor traction conditions
      $418.28 - $443.21
    • (0 reviews)
      # 503294468
      Oldsmobile Cutlass with 28 Spline 1978, Open Grip LS Traction System by Powertrax®. The Powertrax Grip LS, is a clutch-type differential in a forged steel case. This differential uses a set of carbon clutch discs to provide traction as...
      Comes Fully AssembledCarbon Fiber and Steel Friction Plate Technology
      $443.35 - $457.67
    • (0 reviews)
      # 1029225606
      Oldsmobile Cutlass with 1.16" Axle Shaft Diameter with GM 7.5" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1978, Detroit Locker™ Rear Differential by Eaton®. Location: Rear. The Detroit Locker is a 100%-automatic locking...
      100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends
      $774.70
    • (0 reviews)
      # 1029108550
      Oldsmobile Cutlass with 1.16" Axle Shaft Diameter with GM 7.5" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1978, Posi™ Rear Differential by Eaton®. Location: Rear. The Eaton Posi limited-slip differential prevents wheel slip...
      Superior rebuildable designRace-bred carbon friction discs
      $487.18
    • (0 reviews)
      # 183019167
      Oldsmobile Cutlass with GM 7.5" Series Axle with 3.23 and Up Gear Ratio 1978, Rear Dura Grip Positraction by Yukon Gear & Axle®. Location: Rear. The Yukon Dura Grip an example of the popular clutch plate limited slips that appeared as...
      Provides aggressive yet smooth traction to give you the confidence and performance you needFully rebuildable 4 spring design with composite clutches
      $521.31
    • (0 reviews)
      # mpn4517166772
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Master Overhaul Kit by Yukon Gear & Axle®. Location: Rear. Yukon Master Overhaul kits give you all the high quality parts you need to start and finish every...
      Most complete kits on the marketComplete overhaul package to rebuild differential
      $201.27
    • (0 reviews)
      # mpn4517172801
      Oldsmobile Cutlass with 26 Spline / with 28 Spline with GM 7.5" Series Axle with 3.23 and Up Gear Ratio 1978, Rear Dura Grip Carrier Case by Yukon Gear & Axle®. Without Spider Gears. Location: Rear. Dominate the track or hit the trails...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $254.96
    • (0 reviews)
      # 183019133
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear High Performance Ring and Pinion Gear Set by Yukon Gear & Axle®. Location: Rear. Yukon Ring and Pinion sets give you the confidence of knowing you’re running gears designed for...
      Smooth finishEasy Set-Up
      $262.49 - $412.00
    • (0 reviews)
      # mpn4517168181
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with GM 8.5" Series Axle with 2.73 and Up Gear Ratio with 10 Bolt 1978, Differential Carrier by Motive Gear®. Without Internal Kit. All Motive Gear products are engineered for their...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $77.55
    • (1 review)
      # 503622159
      Oldsmobile Cutlass with 10 Bolt 1978, Performance Ring and Pinion Gear Set by Motive Gear®. Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicle. Gear sets are made from first-run steel, we never...
      Central contact patternCNC start to finish
      $210.38 - $265.28
    • (0 reviews)
      # mpn4517172536
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with GM 7.5" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1978, Rear Pro Gear Ring and Pinion Gear Set by Motive Gear®. Location: Rear. Motive Gear Pro Gear ring and pinions...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $448.50
    • (0 reviews)
      # 1029327510
      Oldsmobile Cutlass with 26 Spline with GM 7.5" Series Axle with 10 Bolt 1978, HP™ Rear Limited Slip Differential by Auburn Gear®. Location: Rear. High Performance. Auburn Gear’s flagship limited-slip differential gives you smooth...
      Expertly crafted from superior materialsProvides exceptional reliability
      $416.16 - $451.22
    • (0 reviews)
      # 1029231575
      Oldsmobile Cutlass with 26 Spline with GM 7.5" Series Axle with 10 Bolt 1978, Pro™ Rear Limited Slip Differential by Auburn Gear®. Location: Rear. Turns your torque up another notch, offering an even higher bias ratio and faster...
      Expertly crafted from superior materialsProvides exceptional reliability
      $474.91
    • (0 reviews)
      # 1029177615
      Oldsmobile Cutlass with 1.16" Axle Shaft Diameter with GM 7.5" Series Axle with 10 Bolt 1978, Detroit Truetrac™ Rear Differential by Eaton®. Location: Rear. The Detroit Truetrac is a helical-gear style performance differential that...
      Helical-style pinion gearsLimited-slip operation
      $479.27 - $493.14
    • (0 reviews)
      # 503525449
      Oldsmobile Cutlass with Open Differential 1978, Lock Right Locker by Powertrax®. Powertrax Lock-Right performance lockers’ straight-line performance is equal to a solid spool axle, yet they automatically unlock during turns. When...
      Brute Force Devices For Rugged ApplicationsReplacement Of Differential Case Not Required
      $336.26 - $406.60
    • (0 reviews)
      # mpn4517169459
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with GM 8.5" Series Axle with 2.73 Ratio and Numerically Higher with 10 Bolt 1978, Excel™ Differential Carrier by Richmond®. Designed utilizing the latest technology, this product...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $74.55
    • (0 reviews)
      # 1028894038
      Oldsmobile Cutlass with 10 Bolt 1978, Excel™ Rear Ring and Pinion Gear Set by Richmond®. Location: Rear. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $164.95 - $194.50
    • (0 reviews)
      # 503446089
      Oldsmobile Cutlass with 10 Bolt 1978, Street Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and durability matters. Made from first-run steel, never recycled...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $221.45 - $279.10
    • (0 reviews)
      # 1145921356
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with Front GM 8.5" (10 Bolt) Series Axle / with Rear GM 8.5" (10 Bolt) Series Axle with 2.73 and Up Gear Ratio 1978, Differential Locker by OX Off Road®. OX Lockers can instantly lock...
      Easy clean cabin friendly installation with no setup adjustmentsStandard system uses no electric for a higher level of dependability
      $859.00 - $994.00
    • (0 reviews)
      # 990396867
      Oldsmobile Cutlass with 10 Bolt 1978, Ring and Pinion Gear Set by AllStar Performance®.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $149.99
    • (0 reviews)
      # mpn4517171905
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Bearing Installation Kit by Yukon Gear & Axle®. With Timken Bearings and Races. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $154.27
    • (0 reviews)
      # mpn4517167244
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Carrier Bearing Kit by Yukon Gear & Axle®. Location: Rear. Includes: Carrier bearings, races and "super" carrier shim kit. Yukon Carrier installation kits are great,...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $67.28
    • (0 reviews)
      # mpn4517169914
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Mini Installation Kit by Yukon Gear & Axle®. Location: Rear. Yukon Mini installation kits are a low cost solution for gear changes in newer vehicles where the bearings...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $74.15
    • (0 reviews)
      # mpn4517167246
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Pinion Installation Kit by Yukon Gear & Axle®. Location: Rear. Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $125.62
    • (0 reviews)
      # mpn4517167291
      Oldsmobile Cutlass with 26 Spline with GM 7.5" Series Axle 1978, Rear Mini Spool by Yukon Gear & Axle®. Location: Rear. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a...
      Provides 100% traction to both wheels at all timesInstalls into standard open carrier case
      $184.32
    • (0 reviews)
      # 115954858
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Spider Gear Set by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $101.94 - $186.99
    • (0 reviews)
      # 126869011
      Oldsmobile Cutlass with 10 Bolt 1978, Differential Bearing Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $72.92 - $85.16
    • (0 reviews)
      # 503503196
      Oldsmobile Cutlass 1978, Differential Gear Installation Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo rigid...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $45.48 - $59.93
    • (0 reviews)
      # 503407249
      Oldsmobile Cutlass with 10 Bolt 1978, Differential Master Bearing Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $89.63 - $100.58
    • (0 reviews)
      # 503650502
      Oldsmobile Cutlass with 10 Bolt 1978, Differential Pinion Bearing Kit by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with these premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $46.56 - $59.74
    • (0 reviews)
      # 503297010
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme 1978, Rear Differential Carrier Gear Kit by Motive Gear®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $104.99 - $108.20
    • (0 reviews)
      # 503582475
      Oldsmobile Cutlass with GM 7.5" Series Axle with 10 Bolt 1978, Rear Differential Super Bearing Kit by Motive Gear®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $113.17 - $129.62
    • (0 reviews)
      # 503686697
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Series Axle with 10 Bolt with Open Differential 1978, Rear Mini Spool by Motive Gear®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $80.99 - $81.49
    • (0 reviews)
      # mpn4517168542
      Oldsmobile Cutlass with 7.5" Series Axle with 10 Bolt 1978, Differential Gear Installation Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $30.28
    • (0 reviews)
      # 503417114
      Oldsmobile Cutlass with GM 7.5 Series Axle / with GM 7.625" Series Axle 1978, Differential Mega Bearing Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $157.24
    • (0 reviews)
      # 1029146506
      Oldsmobile Cutlass with 10 Bolt 1978, Excel™ Differential Bearing Kit by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $93.46 - $124.82
    • (0 reviews)
      # 1028977013
      Oldsmobile Cutlass 1978, Excel™ Rear Differential Carrier Gear Kit by Richmond®. Location: Rear. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $101.92 - $105.05
    • (0 reviews)
      # 503550200
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with GM 7.5" Series Axle with Open Differential 1978, Rear Mini Spool by Richmond®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $100.35
    • (0 reviews)
      # mpn4515290647
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with GM 7.5" Series Axle 1978, Mini Spool by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $96.99
    • (0 reviews)
      # 1016980999
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme 1978, Ring and Pinion Installation Bearing Kit by AllStar Performance®.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $97.99 - $99.99
    • (0 reviews)
      # 1066580509
      Oldsmobile Cutlass with 10 Bolt 1978, Ring and Pinion Installation Shim Kit by AllStar Performance®.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $43.99
    • (0 reviews)
      # 503547435
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Bearing Race Driver by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $126.07
    • (0 reviews)
      # mpn4517168017
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Bearing Race Punch by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $59.80
    • (0 reviews)
      # 503486304
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Carrier Bearing Puller by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed...
      Works with an impact gun to safely and easliy remove carrrier bearingsEnables you to keep your engine in the powerband for more giddy-up and high speed
      $456.92 - $545.85
    • (0 reviews)
      # mpn4517166906
      Oldsmobile Cutlass with Dura Grip Locker with GM 7.5" Series Axle 1978, Rear Differential Clutch Set by Yukon Gear & Axle®. Location: Rear. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $136.03
    • (0 reviews)
      # mpn4517167312
      Oldsmobile Cutlass with Posi Differential with GM 7.5" Series Axle 1978, Rear Differential Cross Pin Bolt by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $3.70
    • (1 review)
      # 503695158
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Cross Pin Shaft by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $29.44 - $44.92
    • (0 reviews)
      # mpn4517168851
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Crush Sleeve by Yukon Gear & Axle®. Location: Rear. Designed utilizing the latest technology, this product by Yukon Gear & Axle features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $4.47
    • (0 reviews)
      # mpn4517168372
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Crush Sleeve Eliminator Kit by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $31.49
    • (0 reviews)
      # mpn4517168341
      Oldsmobile Cutlass with Standard Open Differential with GM 7.5" Series Axle 1978, Rear Differential Pinion Gear Thrust Washer by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $6.19
    • (0 reviews)
      # mpn4517169279
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Pinion Mighty Seal by Yukon Gear & Axle®. Location: Rear. Yukon Mighty Seals use the latest designs and manufacturing technologies to produce a precision fit, a tight...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $9.33
    • (0 reviews)
      # mpn4517167464
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Pinion Nut by Yukon Gear & Axle®. Location: Rear. Yukon heavy duty pinion supports feature upgraded materials and a larger design than OEM to provide heavy duty...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $7.22
    • (0 reviews)
      # mpn4517167275
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Pinion Nut Spacer by Yukon Gear & Axle®. Location: Rear. Designed utilizing the latest technology, this product by Yukon Gear & Axle features premium quality and will...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $8.83
    • (0 reviews)
      # mpn4517168009
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Seal Puller by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $39.53
    • (0 reviews)
      # mpn4517170772
      Oldsmobile Cutlass with Standard Open Differential with GM 7.5" Series Axle 1978, Rear Differential Side Gear Thrust Washer by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $7.51
    • (0 reviews)
      # 115954905
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Pinion Depth Shim Kit by Yukon Gear & Axle®. Location: Rear. Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $15.11 - $20.90
    • (0 reviews)
      # mpn4517168870
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Ring Gear Bolt by Yukon Gear & Axle®. Location: Rear. Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $2.79
    • (0 reviews)
      # mpn4517169866
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Set-Up Carrier Bearing by Yukon Gear & Axle®. Without Races. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed...
      Easily slips on and off pinion journal to allow for easier pinion depth adjustmentEnables you to keep your engine in the powerband for more giddy-up and high speed
      $96.61
    • (0 reviews)
      # mpn4517166717
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Super Carrier Shim Kit by Yukon Gear & Axle®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $25.66




    Popular Products

    1978 Oldsmobile Cutlass Models
    Low Prices Price match guarantee
    In-House Experts We know our products
    Guaranteed Fitment Always the correct part
    Easy Returns Quick & Hassle Free

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.

    SECURE SHOPPING