About the Yamaha YZ465
The YZ465 fork year split is a key starting point for a vintage motocross restoration.
Yamaha records the YZ465 in its 1980 motocross history. Decades of racing and restoration can leave an example with a later front end or replacement wheels. Identify those assemblies before ordering suspension or brake parts, and keep the donor details where a period upgrade has changed the original equipment.
Choosing YZ465 service parts
The fork-seal listings show a substantial year difference: the 1980 application has 38 mm inner and 50 mm outer diameters, while 1981 lists 43 × 55 × 10.5 mm. Check height and profile as well as both diameters. For brake shoes, compare the fitted drum and wheel position independently of the fork application.
Compare the model and repairYZ465 application checkpoints
1980 fork application
The featured 1980 seal listing uses a 38 mm inner diameter and 50 mm outer diameter. Check the complete height and profile against the original seal and product details.
1981 fork application
The featured 1981 fork seals are listed as 43 × 55 × 10.5 mm. These should not be substituted for the 1980 application solely because both parts appear in this collection.
Identify your motorcycle before orderingYZ465 identification checklist
- Record the YZ465 identity and model year from the frame and available original documentation.
- Measure and identify the fork fitted to the bike, noting any replacement front end or mixed-year components.
- Compare the brake shoe profile and operating interface with the drum assembly being serviced; confirm wheel position.
Contact PartsNMore with the full model, year, frame and engine markings, and clear photos of the component.
Model reference: Yamaha model history. Product applications are taken from the linked PartsNMore listings.