SKF KYB 46 mm Fork Bushing Kit (type 2) for YAMAHA WRF 250, WRF 450 and SUZUKI RM 250 2003-2004

The SKF type 2 KYB 46 mm VKWA-KYB46-B fork bushing kit is designed for YAMAHA WRF 250, WRF 450 and SUZUKI RM 250 from 2003 to 2004. This kit contains the fork's guide bushings: the outer bushing, at the top of the fork leg, and the inner bushing, at the bottom of the tube. Their PTFE (Teflon) coating reduces friction; once worn, the bronze shows through, the fork binds and the oil seals wear out faster.

Specifications

• Brand: SKF
• Manufacturer part number: VKWA-KYB46-B
• EAN code: 7316581872039
• Contents: 1 inner and 1 outer bushing (for one fork leg)
• Weight: 70 g

When to replace it?

• Grey coating worn through: the copper or bronze shows on the bushing.
• Play in the fork when you rock the bike back and forth with the front brake on.
• Fork that binds at the start of its stroke, oil seals that leak again and again.

Check the bushings every time you replace the oil seals or change the fork oil. Replace them as soon as the bronze shows over more than a quarter of their surface.

Fitting tips

1. Disassemble the fork leg following the manual and separate the outer tube from the inner tube.
2. Remove the old bushings without scratching their seats, and clean them.
3. Fit the new bushings with a suitable tool, then install new oil seals.
4. Reset the fork oil level as per the manual.

Why SKF?

SKF is renowned for its fork seals, among the most durable in motocross according to the American magazine Motocross Action, which notes that the WP forks on KTMs are fitted with them as original equipment. In its Dual Compound range, the brand combines two rubber compounds moulded together: a tough green dust wiper and a softer red sealing lip, both reinforced by a metal insert.

Spare parts and items to plan

• Fork oil seals : ATHENA · SKF
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork dust seals : ATHENA P40FORK455131 · ATHENA P40FORK455120

Frequently asked questions

Do I have to change both bushings?
Check the outer and inner bushings on both legs: they wear together. Replace all those that show bronze.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
SUZUKI RM 250 2003
YAMAHA WRF 250 2004
YAMAHA WRF 450 2004