Triumph BSA 650 Twin 750 Triple 1971-72 BSA B50 Conical Hub Chrome Fork Top Nuts (2) 20TPI PN# 97-4258 C


Availability: In stock

SKU: 633726167766 Categories: , Tags: , Brands:

U.K made from LF Harris, these fork top nuts are of the one-piece design that was originally used on the 1971-1972 oil-in-frame 650 models, 750 triples, and BSA B50. They are chrome plated and domed on top.

Beautifully chrome plated domed fork top nuts are of the original one-piece design. 20 TPI fitment for use in the 1971-1972 conical brake forks. Will fit:

  • 1971-1972 BSA and Triumph 650 and 750 models
  • 1971-1972 BSA B50.

The one-piece fork top nuts have the extended tip to locate the internal spring. They are tightened down using a large spanner and seal the fork oil in the fork tube and secure the instrument mounting brackets.

Sold in pairs, replaces OEM PN# 97-4258 97-4395 & 97-4387 and yes, these do replace both the inner and outer fork top nut on disc brake Triumph forks for a cleaner and easier installation.

IMPORTANT NOTE: These top fork nuts are 20 TPI with thread OD 1 3/16th” (1.187″). Check the TPI of your forks before purchase to ensure fitment of these top nuts. See recommend links for a thread pitch gauge.

For more conical hub fork top nuts CLICK HERE.

New conical hub fork stanchions/tubes are CLICK HERE.



LF Harris motorcycle spares are produced to the highest quality standards possible utilizing original Triumph tooling, dies, factory blueprints & materials combined with modern manufacturing equipment, tolerances & techniques.



There are no reviews yet.

Be the first to review “Triumph BSA 650 Twin 750 Triple 1971-72 BSA B50 Conical Hub Chrome Fork Top Nuts (2) 20TPI PN# 97-4258 C”

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

You may also like…

Scroll to Top

Shop By Vehicle