BSA BANTAM 64MM SINGLE RING 186CC PISTON 

FOR SPORTS/RACING NEEDS.

SUITABLE FOR ALL MODELS 175cc BANTAM 

(D5/D7/D10/D14/B175)

  WITH A 15MM GUDGEON PIN.  WITH 1MM PISTON RING.

*THE SQUISH CLEARANCE AND 

COMPRESSION RATIO WILL NEED

ADJUSTING TO SUIT THE NEW

CAPACITY OF 186CC.