SHOWA 45 mm Outer Fork Bushing (OEM) for HONDA CR 125, CR 250, CR 500 and SUZUKI RM 250 1989-1995

The SHOWA SHO-51045 outer fork bushing is designed for HONDA CR 125, CR 250, CR 500 and SUZUKI RM 250 from 1989 to 1995. The outer fork bushing (guide bushing) is fitted at the top of the fork leg, under the oil seal: together with the inner fork bushing (slide bushing), it guides the sliding of the fork. Its PTFE (Teflon) coating reduces friction; once worn, the bronze shows through, the fork binds and the oil seals wear out faster.

Specifications

• Brand: SHOWA
• Manufacturer part number: SHO-51045
• EAN code: 27504502
• Guide bushing fitted in the outer tube (PTFE-coated inside)

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 bushing without scratching its seat, and clean the seat.
3. Fit the new bushing with a suitable tool (or using the old bushing as a driver), then install new oil seals.
4. Reset the fork oil level as per the manual.

Why SHOWA?

Showa was founded in 1938 in Gyoda, Japan, as Showa Aircraft Precision Works. After the war, the company put its aeronautical know-how to work on motorcycle suspension, notably for Honda, and the brand now belongs to the Astemo group, formed by a merger completed in January 2021.

Spare parts and items to plan

• Fork oil seals : ATHENA P40FORK455086 · ATHENA P40FORK455076
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork dust seals : ATHENA P40FORK455096 · ATHENA P40FORK455098

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:
HONDA CR 125 1991
HONDA CR 125 1990
HONDA CR 250 1991
HONDA CR 250 1990
HONDA CR 250 1989
HONDA CR 500 1991
HONDA CR 500 1990
HONDA CR 500 1989
SUZUKI RM 250 1995
SUZUKI RM 250 1994
SUZUKI RM 250 1993
SUZUKI RM 250 1992
SUZUKI RM 250 1991