Triumph / BSA Singles Kickstart Ratchet Pinion Gears (1) - Choose Gear Type

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New Triumph and BSA unit singles kickstart ratchet pinion gears. Both variation of pinion gears are made in England and will replace both BSA and Triumph part numbers 57-4336, T433 6, 57-2683, T2683 and 40-3271 Fits most unit singles (with side points) from 1965-1973 including the B25, C25, C15, B40, B44, B50, TR5MX and others (excluding the Triumph Cub). Please check your parts book and bore size prior to ordering pistons.. Please note that this gear is sold each as pictured - use the drop down menu to select which gear you desire **Features** Made in England OEM Part number is 57-4336, T4336, 57-2683, T2683 and 40-3271 Show more