Message: BSA Unit Singles LLC will be closed from August 9 to August 18 to attend the BSA International Rally in the UK during that week. The website is always open so orders can be placed and will be shipped starting on Monday the 19th.



PISTON B40, +.020 9:1 COMPLETE JE PISTON

SKU: PB40-020JE
Quantity: Price: $205.10





PISTON B40, +.020 9:1 COMPLETE
FORGED HIGH QUALITY RACING PISTON MADE BY JE PISTONS FOR BSA UNIT SINGLES
CAN RUN AT CLOSER TOLERANCES (.0027 TO .0030) THAN OTHER B40 PISTONS ON THE MARKET
BARE PISTON WEIGHT 354 GRAMS
COMPLETE PISTON WITH RINGS, CLIPS AND WRIST PIN WEIGHT 459 GRAMS

THIS HIGHER COMPRESSION B40 PISTON IS ONLY AVAILABLE HERE. THE HIGHEST COMPRESSION PISTON BSA MADE FOR THE B40 WAS 8.75:1
THIS WILL GIVE A BIT MORE POWER WITHOUT THE COMPLICATIONS OF EVEN HIGHER COMPESSION PISTONS

ANOTHER UNIQUE FEATURE OF THESE PISTONS IS THAT THE DOME HEIGHT HAS BEEN SLIGHTLY DECREASED ON EACH OVERSIZE SO THE COMPRESSION RATIO REMAINS CONSTANT ACROSS ALL OVERSIZES. NO OTHER MANUFACTURERS DO THIS FOR BSA PISTONS. IF THE DOME HEIGHT IS NOT ADJUSTED ON OVERSIZE PISTONS THE RESULT IS INCREASING COMPRESSION ON EVERY OVERSIZE!

FOR REPLACEMENT RING SET USE CODE RB44-020JE


Models we have parts for: C15 Star, C15T Trials, C15S Scrambler, C15SS Sport Star, C15 Pastoral, C15 Starfire, C15 Roadster, B40 Star, B40SS Sport Star, B40 Enduro Star,B40 Roughrider, WDB40, BSA 441,B44GP Grand Prix, B44 Enduro, B44 Victor, B44 Victor Special, B44 Roadster, C25 Barracuda, B25 Starfire, B25 Fleetstar, B44 Shooting Star, B25T, B25SS, B50SS, B50T Trail, B50MX, TR25W Trophy, T25T