Perhaps you are using KF ST steel universal joint (K1911 ST Steel Rear Universal Joint and K1488 V1RRR/G4 ST Steel Front Universal Joint) for V1RRR.? After using for a while, you may find your stock joint cup develops a small groove where the universal joint has been riding.? This is causing the pin to lock into this unwanted groove that made the suspension lock up under acceleration or break, which causes the chatter. ?To fix this problem, K Factory has designed a new Lightened ST Steel Gear Diff Joint Cup, which has same material as KF universal joint.? The durable ST steel joint cup ensures the long wearing time and less chance for your joint cup to develop the groove.? Use both KF ST steel joint cup & ST steel universal joint is the best combination for V1RRR.
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Products > K Factory - V1RRR > V1RRR Lightened ST Steel Gear Diff Joint Cup (2)
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