Manufacturers

STREET Differentials

VW, Volkswagen, Audi, LSD, differential, USRT, rally, racing

Would a rally team be doing its job without a full selection of differentials to choose from? We don?t think so! Limited slip diffs are a critical part of any competition vehicle. Each type has a different set of benefits and compromises.

Open Differential: The factory supplies this cost-effective solution which works fine so long as heavy throttle is not applied. The problem is that when one of the wheels slips, the drivetrain is not able to provide power to the other wheel. Basically, if one of the wheels starts to spin any additional power travels through the path of least resistance. That is always the spinning wheel. So, applying power produces no increase in acceleration. Open diffs are not useful in any motorsports.

Clutch-Type Differential: Lockup is proportionate to the power applied. The unit can be by varying clutch ramp angles or by varying the number of active clutch surfaces. This is the most tunable of limited slip differentials. Periodic maintenance is required due to clutch plate wear. Street driveability is not as good as that from torque biasing designs (TBD). However, this is typically the best solution for loose surface rally and road racing. Here's a fine writeup.

Torque Biasing Differential: The TBD usually behaves as an open differential, only coming into play as a limited slip diff when a loss of traction is experienced, as on turn exit with the power on. The TBD will automatically change from a 50/50 split to biasing the split towards the tire with the greater grip. Most Peloquins-brand differentials have a maximum torque bias of 20/80, meaning that up to 80% of the applied torque can be biased to the tire with grip. The bias is continuously variable from 50/50 to 80/20 in proportion to grip loss. The TBD differential provides the least amount of understeer of any limited slip differential and is the best choice for the street, tarmac rally, and autocross.

Spool (or Welded Diff): These are not differentials at all as the left and right axles are completely tied together. Spools are brutally effective on snow/ice and in single-purpose drag race cars with extreme power. Road race cars may also do well with them so long as suspension is tuned appropriately. They're the worst possible street solution causing extreme understeer and dangerous drivetrain binding. In the right element, however, spools are UNBEATABLE.

Want to learn more? Read this helpful article.

Peloquin 020 80% Shim Kit

Peloquin 020 80% Shim Kit

Upgrade your Peloquin or factory open differential (not Quaife, Kaaz, or "other") without removing the transaxle. Decrease torque steer on...
$109.00
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Peloquin 020 Differential

Peloquin 020 Differential

Comes with bolt kits, bearings, and a transferable limited lifetime warranty. More aggressive torque biasing than the Quaife 020. Special note from...
$849.00
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Peloquin 02A Differential

Peloquin 02A Differential

Comes with bolt kits, bearings, o-rings, 5th gear cover gasket, and a transferable limited lifetime warranty.
$875.00
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Peloquin 02J (Mk4)

Peloquin 02J (Mk4)

Our differential comes with 2 bearings, special ARP bolt kit, speedometer gear, o-rings and gasket, and a transferable limited lifetime...
$825.00
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Peloquin 02JB (late Mk4/Mk5)

Peloquin 02JB (late Mk4/Mk5)

Our differential comes with 2 bearings, special ARP bolt kit, speedo gear, o-rings and gasket. Compatible with Golf 4-cylinder and new...
$899.00
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Peloquin 02M FWD Differential

Peloquin 02M FWD Differential

Comes with differential bearings, bolt kit, and a transferable limited lifetime warranty.
$915.00
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Peloquin 02M (4Motion Front)

Peloquin 02M (4Motion Front)

The Peloquin 02M front (AWD) differential replaces the stock open unit. Handling and traction are absolutely transformed at the limit. Power on...
$980.00
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Peloquin 02M (4Motion Rear)

Peloquin 02M (4Motion Rear)

The only 02M rear differential available on the market , this replaces the stock open unit. Handling and traction are absolutely transformed at the...
$995.00
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Peloquin 02Q FWD Differential

Peloquin 02Q FWD Differential

Optimize your Mk5 - Mk6 Golf/Jetta or MK2 Audi TT with this unit. The 02Q transmission is far stronger than the previous 02M 6-speed (used in...
$999.00
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Peloquin 02Q AWD Differential

Peloquin 02Q AWD Differential

Optimize your 2010+ Golf R or 2004 - 2010 Audi with this unit. The 02Q AWD transmission is capable in stock form. However, it doesn't live...
$1,139.00
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