Yamaha DT50 1988–1990 / 1998 Fork Oil & Dust Seal Set 30x40.5
Brand-new unbranded 30 x 40.5 x 10.5 mm fork oil and dust seal set for selected Yamaha DT50 applications.
Seal Size
- Fork oil seal: 30 x 40.5 x 10.5 mm
- Position: Front forks
- Product type: Fork oil and dust seal set
- Condition: Brand new
- Type: Unbranded aftermarket replacement
Vehicle Compatibility
| Make | Model | Years | Evidence / Notes |
|---|---|---|---|
| Yamaha | DT50 MX / R / LC | 1988–1990 | Complete All Balls 56-104 aftermarket kit applications |
| Yamaha | DT50 LC / R | 1998 selected applications | Complete 56-104 catalogue application |
Important Fitment Information
Yamaha DT50 fork specifications vary substantially by year and fork version. Use only for the catalogued 30 x 40.5 x 10.5 mm applications and compare the removed dust wipers before ordering.
This is an aftermarket dimensional cross-fit application. The models above are supported by complete oil-and-dust-seal kit catalogues using the same 30 x 40.5 x 10.5 mm oil-seal family, but their original OEM dust-seal part numbers can differ from Yamaha YBR125 BF7/4GU references.
Before ordering, compare the fork-tube diameter, oil-seal dimensions, dust-wiper outer profile and seating depth with the seals removed from the motorcycle.
What's Included
Fork oil and dust seals as supplied. The current Shopify export does not independently verify the exact number of individual seals in the pack.
Installation
Fork service is safety-critical. Inspect the fork tubes for pitting or scoring, install seals squarely without damaging the lips, and refill the forks with the correct oil grade and level for the motorcycle.