Big Bore Piston Kit – 131″ – +.010 – M8
Piston kit includes set of pistons, rings, wristpins, and clip, Compression ratios listed are approximate and are calculated using the correct length cylinders as specified by S&S

2022 Harley-Davidson CVO Road Glide Limited – – 2022 Harley-Davidson Street Glide ST FLHXST – – 2022 Harley-Davidson Softail Low Rider ST FXLRST – – 2022 Harley-Davidson Road Glide ST FLTRXST – – 2021 Harley-Davidson Electra Glide Revival – – 2020-2022 Harley-Davidson Softail Standard FXST – – 2020-2022 Harley-Davidson Road Glide Limited FLTRK – – 2020-2022 Harley-Davidson Softail Low Rider S FXLRS – – 2020-2022 Harley-Davidson CVO Tri Glide FLHTCUTGSE – – 2019-2022 Harley-Davidson Electra Glide Standard EFI FLHTI – – 2019-2020 Harley-Davidson FXDR 114 – – 2018-2022 Harley-Davidson Softail Fat Bob 114 FXFBS – – 2018-2022 Harley-Davidson Softail Fat Boy 114 FLFBS – – 2018-2022 Harley-Davidson Softail Heritage Classic 114 FLHCS – – 2018-2022 Harley-Davidson Softail Street Bob FXBB – – 2018-2022 Harley-Davidson CVO Road Glide Custom FLTRXSE – – 2018-2021 Harley-Davidson Softail Heritage Classic FLHC – – 2018-2021 Harley-Davidson Softail Slim FLSL – – 2018-2021 Harley-Davidson Softail Sport Glide FLSB – – 2018-2020 Harley-Davidson Softail Breakout 114 FXBRS – – 2018-2020 Harley-Davidson Softail Deluxe FLDE – – 2018-2020 Harley-Davidson Softail Low Rider FXLR – – 2018-2019 Harley-Davidson Softail Breakout FXBR – – 2018-2019 Harley-Davidson Softail Fat Bob FXFB – – 2018-2019 Harley-Davidson Softail Fat Boy FLFB – – 2017-2022 Harley-Davidson Electra Glide Ultra Limited FLHTK – – 2017-2022 Harley-Davidson Street Glide Special FLHXS – – 2017-2022 Harley-Davidson Road Glide Special FLTRXS – – 2017-2022 Harley-Davidson Freewheeler FLRT – – 2017-2022 Harley-Davidson Road King Special FLHRXS – – 2017-2022 Harley-Davidson Road King EFI FLHR – – 2017-2022 Harley-Davidson Tri Glide Ultra Classic FLHTCUTG – – 2017-2022 Harley-Davidson CVO Street Glide FLHXSE – – 2017-2022 Harley-Davidson Street Glide EFI FLHX – – 2017-2022 Harley-Davidson Road Glide Custom FLTRX – – 2017-2021 Harley-Davidson CVO Electra Glide Ultra Limited FLHTKSE – – 2017-2021 Harley-Davidson Electra Glide Police FLHTPI – – 2017-2019 Harley-Davidson Electra Glide Ultra Limited Low FLHTKL – – 2017-2019 Harley-Davidson Road Glide Ultra FLTRU – – 2017-2019 Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI – –