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0000023 Bob Newby Racing (BNR) Belt Drive – Triumph Pre Unit 500/650 Twin


In stock (can be backordered)

Complete belt drive and clutch for your 650 Triumph pre unit motorcycle. This kit includes everything you need to replace your stock primary drive and clutch. The front engine pulley is one-piece, hard-anodized aluminum and fits right onto your stock crankshaft splines. The hard-anodized aluminum clutch basket features enclosed bearings, no hassles with installing loose ball bearings, it slips right onto your transmission main shaft the same as a stock clutch hub center. New steel and fiber clutch plates are included, with a 6-spring pressure plate and hardware. The belt is capable of handling much more power than stock and clutch is able to be adjusted more easily. Requires 1954 – 1962 500/650 Triumph twin models to be converted to run dry primary. No more adjusting a primary chain, checking your chaincase oil or trying to fix primary drips.

In stock (can be backordered)


Available for other brands. Please contact us for more information.