47 cc Performance Parts

 

PBU Domes and Copper Rings

BILLET ALUMINUM PRECISION MACHINED DOMES

14:1, 15:1 & 17:1 COMPRESSION DOMES AVAILABLE

THE COMPRESSION DOME ON YOUR MOTOR IS THE MOST IMPORTANT FACTOR IN THE OVERALL PERFORMANCE OF YOUR ENGINE.

WE HAVE DESIGNED AND TESTED OVER 25 DOMES AND HAVE CHOSEN THE BEST SHAPES AND TOLERANCES FOR YOUR BIKE.

44mm STANDARD BORE 47cc ENGINES

14:1 COMPRESSION DOME WITH COPPER RING (FOR 89 TO 92 OCTANE FUELS)

PRICE $35.00

15:1 COMPRESSION DOME WITH COPPER RING

(FOR FUELS ABOVE 92 OCTANE)

PRICE $38.00

17:1 COMPRESSION DOME WITH COPPER RING

(FOR ALCOHOL, METHANOL FUELS)

PRICE $38.00

COPPER REPLACEMENT RINGS

.020 THICKNESS

PRICE: $12.00 EACH



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