Set of 2 reinforced bearings (riveted steel cage C4) + TUN 'R crankshaft viton spy seals for derbi euro engine 1, 2, 3 & 4

Ideal for refurbishing your low engine, here is the sets of bearings + TUN 'R crankshaft spinnaker for DERBI euro 1, 2, 3 & 4 engine.

It is composed of 2 spy viton SFK and 2 NTN riveted steel cage bearings in C4 set.

Ideal for medium and large configuration (not recommended originally because the C4 set is still suitable for high speeds).