S&S Cycle 2007+ BT 4.250in Bore 4.840in - Wrinkle Black w/o Highlight
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to S&S Cycle, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with S&S Cycle, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
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S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® platform (2017 and newer big twins) and open up a whole new level of performance for these engines. Combining a new design forged piston with their 4.25" cylinders to net a tire melting 131 cubic inches when paired with their 4.625" stroker crank. We build our big bore kits and cranks to much tighter tolerarances and with higher quality materials than the factory parts. This new piston/cylinder kit will be a solid platform for massive power.
- Must be used with our stroker flywheels to achieve 131" displacement (part #s 320-0605, 320-0620)
- Powder coat finish match factory finish, giving the bike a "sleeper" advantage
- Huge displacement increase means huge power increase
- .030" MLS (multi-layered steel) head gaskets
- Original engine serial numbers are retained
- Includes 131" Cam Cover Badge
- Works with stock crankcases
- Retains stock engine height
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018-2020 | Harley-Davidson | FLDE Deluxe 107 | Base |
| 2018-2020 | Harley-Davidson | FLFBS Fat Boy 114 | Base |
| 2018-2020 | Harley-Davidson | FLHCS Heritage Classic 114 | Base |
| 2017-2020 | Harley-Davidson | FLHR Road King | Base |
| 2017-2020 | Harley-Davidson | FLHRXS Road King Special | Base |
| 2019-2020 | Harley-Davidson | FLHT Electra Glide Standard | Base |
| 2017-2019 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic | Base |
| 2020 | Harley-Davidson | FLHTCUTGSE CVO Tri Glide | Base |
| 2017-2020 | Harley-Davidson | FLHTK Ultra Limited | Base |
| 2017-2019 | Harley-Davidson | FLHTKL Ultra Limited Low | Base |
| 2017-2020 | Harley-Davidson | FLHTKSE CVO Limited | Base |
| 2017-2020 | Harley-Davidson | FLHX Street Glide | Base |
| 2017-2020 | Harley-Davidson | FLHXS Street Glide Special | Base |
| 2017-2020 | Harley-Davidson | FLHXSE CVO Street Glide | Base |
| 2017-2020 | Harley-Davidson | FLRT Freewheeler | Base |
| 2020 | Harley-Davidson | FLTRK Road Glide Limited | Base |
| 2017-2019 | Harley-Davidson | FLTRU Road Glide Ultra | Base |
| 2017-2020 | Harley-Davidson | FLTRX Road Glide | Base |
| 2017-2020 | Harley-Davidson | FLTRXS Road Glide Special | Base |
| 2018-2020 | Harley-Davidson | FXBRS Breakout 114 | Base |
| 2019-2020 | Harley-Davidson | FXDRS FXDR 114 | Base |
| 2018-2020 | Harley-Davidson | FXFBS Fat Bob 114 | Base |
| 2020 | Harley-Davidson | FXLRS Low Rider S 114 | Base |
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