S&S Cycle SS920-0143 Standard Dome Top Pistons w/11:1 Compression Ratio for Royal Enfield 650 Twins 19-Up
S&S Cycle SS920-0143 Standard Dome Top Pistons w/11:1 Compression Ratio for Royal Enfield 650 Twins 19-Up is backordered and will ship as soon as it is back in stock.
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These high compression pistons feature a 7cc raised dome to achieve a compression ratio of 11:1 (from 9.5:1). Higher compression is a key factor in increasing performance.
(Part Numbers: ROL-SS920-0143)

