Prox with crankshaft seals Crankshaft bearingRef : PRO00162A / 1117589

PROX Crankshaft Bearing and Seal Kit — Manufacturer's reference: 23.CBS63004

Specifically designed for rebuilding the bottom end, this PROX kit includes the bearings and seals necessary for reconditioning the crankshaft. Intended for motocross machines, it allows for proper sealing and controlled sliding between the crankshaft and the case during an engine overhaul.

• Complete kit: bearings + seals for crankshaft
• Treated bearings to reduce friction and promote smoother operation
• Allows for replacement of worn parts during a bottom end service

This kit is aimed at riders who realign their bottom end after crashes or for preventive maintenance on motocross and cross machines. Examples of commonly affected models: KTM 300 SX (2025), HUSQVARNA TC 250 (2025), GAS GAS EC 300 (2024) — check the manufacturer's reference before ordering to ensure compatibility with your model.

Workshop advice: check the condition of the crankshaft and its seating before installation, replace additional parts if necessary, and adhere to the recommended torque specifications. For safe installation, it is advisable to have the assembly done in a workshop or by an experienced mechanic.