Vehicle Fitment Information
Pistons & Top End
S&S Cycle 128" Big Bore Kits for M-Eight 114"/117" Engines
$0.00 - $2,640.95
Bolt-on kit, the largest cylinder bore possible without requiring machining of the crankcases. Features 4 1/4" bore, 4 1/2" stroke, and 11:1 forged pistons. All necessary gaskets and hardware required for installation included. Made in the U.S.A. Note: Not recommended for H-D FL Trike.
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