Bring your Harley engine build up to 107" with this S&S replacement piston kit. Designed for use with stock 4-3/8" stroke flywheels, these pistons provide a way to increase displacement while keeping the factory stroke.
Features:
Works with stock 4 3/8" stroke flywheels to increase displacement to 107"
Stock cylinders may be bored to accommodate larger pistons, but S&S recommends using their 3.937" bore cylinders, which feature high-strength alloy cast-iron liners
10.4:1 compression using stock heads
Pistons are complete with rings, wristpins, and wristpin clips
3.937" standard bore
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Please review this product's fitment notes & exceptions prior to purchase:
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This product will fit your 2011 Harley Davidson Softail Deluxe FLSTN/I
Fitment Notes & Exceptions
This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only.
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