Naraku 09210859 Crankshaft bearing and seal kitRef : NARK00061A / 09210859

Manufacturer Ref: NK102.90 — Brand: NARAKU

NARAKU HD (Heavy Duty) crankshaft bearing kit designed for the engine maintenance of small displacement and compact motorcycles. This set includes the essential components for a careful reassembly: left and right main bearings in a metal cage as well as the corresponding shaft seals. The supplied bearings are C3 clearance models from reputable manufacturers (NTN or KOYO), ensuring a tolerance suitable for rotational stresses.

• Contents: left bearing + right bearing (metal cage) and shaft seals.
• Quality: C3 type bearings — NTN or KOYO.
• Product designation: Not disclosed (manufacturer reference NK102.90).
• Category: CRANKSHAFTS + PARTS — suitable for crankshaft interventions.

This kit is aimed at motorcyclists working on 50 cc engines and other small displacements, particularly in the Vintage/Classic, Trail/Adventure, Enduro, Urban, Roadster, Sport/Racing, and Supermoto categories. Examples of frequently affected models include: BETA RR 50 Motard X Special Edition (2025), RIEJU MRT 50 SM PRO (2022), FANTIC CABALLERO 50 M Motard Performance (2020).

Important: when replacing the crankshaft, always use new bearings and seals for a reliable reassembly that complies with engine maintenance rules.