Slayer of the pre-unit scramblers in the early'60s, the B40 is equally at home as a trials mount.
For general parts, please see the product indexon the left.
High-quality primary chains made from Italian Regina material. Choose the one for your bike.
Italian-made Radaellis are an economical choice for chrome rims. Chrome quality is not the very best, but quite acceptable. There are no external markings, and they are shaped like a Dunlop rim. Drilled to match your hub. The sizes and drill patterns listed are in stock; delivery on special-order items takes weeks. Please contact us if you don't see what you need.
Seals dirt and water from entering your Concentric around the throttle cable and carb top.
Complete seat has a fiberglass replica of the B50MX base, topped with firm foam and an OE-style black vinyl cover. This seat works excellently on the earlier unit single BSA frames, and is also very popular when building specials.
The ultimate repair manual for your motorbike. Available for BSA or Triumph; Singles or Twins.
The NJB MX Expert shocks have been extensively tested for years by top-level riders, thus providing spectacular performance and fade resistance, on a level with the most-expensive vintage MX shocks in the world. Available with a single-rate spring or a dual-rate spring set-up to suit all riders and price points. They are available in 13.0", 13.4", and 14.0"lengths. Priced as a pair, includes bushes and springs.
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