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88" to 107" big bore conversion piston set
for most cylinder heads
55mm wide x 55mm high
1-3/4" headpipe steps up to 1-7/8" into the collector to increase flow and improve performance
Cometic, cylinder base gasket. Rear. .031" fiber - 63-65 Panhead; 66-84 Shovelhead (NU) 3692 88" to 107" big boreRear gasket. . 031" fiber, a premium hi temperature, hi density creep resistant material that requires no re torquing, no additional sealants, is fuel resistant and asbestos free. OEM replacement reference 16777 63.
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