Quick Change Differentials and Components
Circle Track Quick Change Differentials & Components at JJ Motorsports
Adapt to any track condition with quick change differentials and components from JJ Motorsports. These essential parts allow rapid gear ratio adjustments for optimal torque and speed, providing superior traction and durability in high-stress IMCA, USMTS, and dirt oval racing for late models, modifieds, and street stocks.
Shop trusted brands like PEM for complete assemblies, Frankland for Gleason Torsen diffs, and Coleman Machine for housing bells. Explore related categories such as Circle Track Complete Quick Change Rear-Ends for full setups or Circle Track Quick Change Gears for ratio options.
Top Circle Track Quick Change Differentials & Components
- PEM Quick Change Assembly 4.86 5x5 Hubs Axles QCKSTGN5-486-60CP – Rear Axle Assembly Centered Pinion 10 in Ring Gear 4.86 Ratio Standard Hubs / Rotors 60 in Wide Kit for versatile racing applications.
- PEM Quick Change Assembly No Tubes 4.86 QCNT-486 – Quick Change Assembly No Tubes with 4.86 ratio, designed for custom tube installations in high-performance setups.
- PEM Quick Change Rear 4.11 Max No Tubes QCNT-411MAX – Rear Axle Assembly MAX No Tubes 10 in Ring Gear 4.11 Ratio Each, ideal for maximum strength and lightweight builds.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Rear Cover Superlight Coated KT0840MC
FRANKLAND RACING
$151.99Rear Cover Superlight CoatedGear Cover10-BoltBall BearingsAluminumThermal Dispersant CoatedFrankland Quick ChangeEachFRKKT0840MC- SKU:
- FRKKT0840MC
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- MFG Part #:
- KT0840MC
$151.99Qty in Cart: 0Quantity:Price:$151.99Subtotal: -
Superlite Rear Cover KT0840M
FRANKLAND RACING
$114.99Superlite Rear Cover Gear Cover10-BoltBall BearingsAluminumNaturalFrankland Quick ChangeEachFRKKT0840M- SKU:
- FRKKT0840M
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- MFG Part #:
- KT0840M
$114.99 -
DMI CT1 Aluminum Spacer for Front Yoke RRC-1485
DIVERSIFIED MACHINE
$9.99CT1 Aluminum Spacer for Front YokePinion Yoke Spacer0.235 in ThickAluminumNaturalDMI Bulldog Rear EndsEachDMIRRC-1485- SKU:
- DMIRRC-1485
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- RRC-1485
$9.99 -
DMI CT1 Steel Lower Shaft Heavy Duty RRC-1427HD
DIVERSIFIED MACHINE
$259.99CT1 Steel Lower Shaft Heavy DutyLower ShaftHeavy Duty10/10 Spline19.69 in LongOpen DriveSteelDMI Bulldog CT-1 Rear EndsEachDMIRRC-1427HD- SKU:
- DMIRRC-1427HD
- Availability:
- Ships Same Business Day
- Weight:
- 5.28 LBS
- MFG Part #:
- RRC-1427HD
$259.99 -
DMI CT1 Steel Lower Shaft Ground Finish RRC-1427
DIVERSIFIED MACHINE
$191.99CT1 Steel Lower Shaft Ground FinishLower Shaft10/10 Spline19.69 in LongOpen DriveSteelDMI Bulldog CT-1 Rear EndsEachDMIRRC-1427- SKU:
- DMIRRC-1427
- Availability:
- Ships Same Business Day
- Weight:
- 5.27 LBS
- MFG Part #:
- RRC-1427
$191.99 -
DMI CT1 Lower Shaft Bearing RRC-1411
DIVERSIFIED MACHINE
$25.99CT1 Lower Shaft Bearing Lower Shaft BearingSteelCT-1Bulldog Quick ChangeEachDMIRRC-1411- SKU:
- DMIRRC-1411
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- MFG Part #:
- RRC-1411
$25.99 -
DMI Gear Cover Bearing Retainer RRC-1390
DIVERSIFIED MACHINE
$11.99Gear Cover Bearing RetainerBearing RetainerAluminumNaturalDMI Bulldog Rear EndsEachDMIRRC-1390- SKU:
- DMIRRC-1390
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MFG Part #:
- RRC-1390
$11.99 -
DMI Billet Alum Rear Cover w/Bearings Black RRC-1386B
DIVERSIFIED MACHINE
$377.99Billet Alum Rear Cover w/Bearings BlackGear Cover6-BoltBall BearingsBillet AluminumBlack AnodizedDMI Bulldog Quick ChangeKitDMIRRC-1386B- SKU:
- DMIRRC-1386B
- Availability:
- Ships Same Business Day
- Weight:
- 3.83 LBS
- MFG Part #:
- RRC-1386B
$377.99 -
DMI Posi-Lock Retainer RRC-1366
DIVERSIFIED MACHINE
$42.99Posi-Lock Retainer Pinion Posi-Lock RetainerAluminumDMI CT-1 Bulldog Rear EndsEachDMIRRC-1366- SKU:
- DMIRRC-1366
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MFG Part #:
- RRC-1366
$42.99 -
DMI Bearing for Rear Cover RRC-1350
DIVERSIFIED MACHINE
$35.99Bearing for Rear Cover Gear Cover BearingBall BearingSteelDMI Quick ChangeEachDMIRRC-1350- SKU:
- DMIRRC-1350
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MFG Part #:
- RRC-1350
$35.99 -
DMI 2-Bolt Locking Tab RRC-1330
DIVERSIFIED MACHINE
$6.292-Bolt Locking Tab Lock TabSteelNaturalPinion Retainer Plate BoltsDMI Bulldog Rear EndsEachDMIRRC-1330- SKU:
- DMIRRC-1330
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- RRC-1330
$6.29 -
DMI Timken Big Pinion Bearing RRC-1311
DIVERSIFIED MACHINE
$96.99Timken Big Pinion BearingPinion BearingBigSteelDMI CT-1 10 in Ring and PinionEachDMIRRC-1311- SKU:
- DMIRRC-1311
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- MFG Part #:
- RRC-1311
$96.99 -
DMI CT1 Side Bell Bearing Alum Spool RRC-1171
DIVERSIFIED MACHINE
$28.99CT1 Side Bell Bearing Alum SpoolAxle BearingSide BellAluminum SpoolDMI Bulldog CT-1 SpoolEachDMIRRC-1171- SKU:
- DMIRRC-1171
- Availability:
- Ships Same Business Day
- Weight:
- 5.87 LBS
- MFG Part #:
- RRC-1171
$28.99 -
DMI CT1 Side Bell Race RRC-1170
DIVERSIFIED MACHINE
$13.99CT1 Side Bell Race Axle Bearing RaceSteelDMI Bulldog CT-1 Side BellEachDMIRRC-1170- SKU:
- DMIRRC-1170
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- MFG Part #:
- RRC-1170
$13.99 -
DMI Friction Fighter Quick Change Gears 4G FFQCG-4G
DIVERSIFIED MACHINE
$355.99Friction Fighter Quick Change Gears 4GQuick Change Gear SetFriction FighterSet 4G10 Spline4.12 Ratios 5.27 / 3.234.86 Ratios 6.21 / 3.81SteelEachDMIFFQCG-4G- SKU:
- DMIFFQCG-4G
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- MFG Part #:
- FFQCG-4G
$355.99 -
DMI Friction Fighter Quick Change Gears 23 FFQCG-23
DIVERSIFIED MACHINE
$355.99Friction Fighter Quick Change Gears 23Quick Change Gear SetFriction FighterSet 2310 Spline4.12 Ratios 6.18 / 2.754.86 Ratios 7.29 / 3.24SteelEachDMIFFQCG-23- SKU:
- DMIFFQCG-23
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- MFG Part #:
- FFQCG-23
$355.99 -
DMI Friction Fighter Quick Change Gears 16 FFQCG-16
DIVERSIFIED MACHINE
$355.99Friction Fighter Quick Change Gears 16Quick Change Gear SetFriction FighterSet 1610 Spline4.12 Ratios 5.49 / 3.094.86 Ratios 6.48 / 3.65SteelEachDMIFFQCG-16- SKU:
- DMIFFQCG-16
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- MFG Part #:
- FFQCG-16
$355.99 -
Winters Quick Change Gear Cover Rebuild Kit
J J MOTORSPORTS
$185.26Kit Includes: (2) Bearings OD: 2.440" ID: .982" (2) Bearing Cover Caps (2) Bearing Cap O-Rings (6) Cover Cap Bolts Gear Cover Gasket (10) Gear Case Nuts234-9088- SKU:
- 234-9088
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$185.26Qty in Cart: 0Quantity:Price:$185.26Subtotal: -
PEM Quick Change Assembly Max 4.86 5x5 Hubs Axles QCKSTGN5-486MAX-2OFF
PEM
$3,044.99Quick Change Assembly Max 4.86 5x5 Hubs AxlesPEMQCKSTGN5-486MAX-2OFF- SKU:
- PEMQCKSTGN5-486MAX-2OFF
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$3,044.99Qty in Cart: 0Quantity:Price:$3,044.99Subtotal: -
PEM Quick Change Assembly 4.86 5x5 Hubs Axles QCKSTGN5-486-2OFF
PEM
$2,439.99Quick Change Assembly 4.86 5x5 Hubs AxlesPEMQCKSTGN5-486-2OFF- SKU:
- PEMQCKSTGN5-486-2OFF
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$2,439.99Qty in Cart: 0Quantity:Price:$2,439.99Subtotal:
