Roll Centre Adjusters

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Hardrace Roll-Center Adjusters are special CNC machined spacers to correct the roll centre on lowered cars. This relieves some of the angle on the driveshaft CV joints and will pro long CV joint life - this is why we call it the Driveshaft Saver. Driveshafts are a common fault with P1 chassis cars and it is easy to see why - there are tons of lowered cars! Even a drop of 50mm can wear driveshafts quickly and they are not cheap to replace. By installing the Hardrace Roll-Center Adjusters, it will correct the suspension geometry of a lowered car, putting the control arms back closer to its original position, resulting in increased steering response and stability while eliminating bump steer. Decrease roll Improves tire contact patch with the road Increases steering wheel responsiveness Enables increased cornering force Prolong driveshaft life The Roll-Centre Adjusters are also bundled with uprated Hardrace ball joints. You should replace the ball joint as they can be easily damaged during removal and are not designed to be fitted with RCA Plates. Optional Upgrade Extended Tie Rods:The OEM Tie Rod Ends will have to be adjusted to compensate your steering angle for the new ball joints. They will toe in without adjustment. Adjusting the OEM Tie Rod ends may result in the Tie Rod End only being attached by a few threads. The Hardrace Extended Tie Rod Ends have a deeper socket and will have sufficient thread to allow for full adjustment. Fitment Notes: Hardened Rubber. Tie Rod Ends not included. Ball Joint size depends on chassis number. Check the last 6 digits on your VIN code, that will be the chassis number. Volvo C30VIN up to 000261 = 18mm Ball joint neededVIN from 000261= 21mm Ball joint needed Volvo S40VIN up to 209290 = 18 mm Ball joint neededVIN from 209291 = 21 mm Ball joint needed Volvo V50VIN up to 214682 = 18 mm Ball joint neededV50 from 214683 = 21 mm Ball joint needed Volvo C70VIN up to 002027 = 18 mm Ball joint neededVIN from 002027 = 21 mm Ball joint neededFord Focus ST Mk2The taper diameter (at bottom of ball joint stud) changed from 18mm to 21mm for the Focus and C-Max in Sep/Oct 2006. Fits: Volvo C30 Volvo C70 Volvo S40 Volvo V50 Ford Focus ST Mk2 Show more