Premium crankshaft bearing and oil seal assembly for Derbi Euro 2 and Euro 3 engines.

Engineered by Polini for high-performance racing applications, these components deliver exceptional durability in demanding conditions while serving as reliable replacements for stock setups. The oil seals feature Viton construction with superior thermal and chemical resistance, paired with polymer-coated lips that reduce friction and extend component life.

Set includes :

• Two NTN C4 steel cage crankshaft bearings (6204, 20x47x14mm)
• Two precision oil seals (20x35x7mm) for complete crankshaft protection