Pistons for Triumph 650 c.c. Motorcycles - +0.040 Vendor_Rich Phillips simply use the stock grommets

simply use the stock grommets and mounting hardware from a 1986 & later Sportster

and spacer 41196-55 used on 1955-1978 Sportster

3/8" drive

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Long needle with *TYPE 1* head (large)

Pistons for Triumph 650 c.c. Motorcycles - +0.040 Vendor_Rich Phillips simply use the stock grommetsThese pistons are produced for Triumph 650 c. c. motorcycles by Emgo and include the pair of pistons, two wrist pins, and four keepers as pictured. These pistons are a stock 9: 1 compression ratio. Piston rings are sold separately. NOTE: Triumph 650 c. c. bikes have a 71 mm bore standard, +0. 020" is 71. 5 mm, +0. 040" is 72 mm, +0. 060" is 72. 5 mm, and +0. 080" is 73 mm.