KB409C040 Performance, 96" to 103" big bore piston set. +.040"
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Specifications
- Brand
- KB Performance Piston
- Part Number
- KB409C040
- OEM Reference
- —
- Pack Quantity
- Sold as a set
- Category
- Pistons And Rings Kits
- VAT Rate
- 20%
About This Product
Take your 2007 to 2017 Twin Cam from 96" to 103" with this KB Performance big bore piston set. These +.040" oversize pistons are designed for stock cylinders bored to 3-7/8" and stock heads, providing a solid 10.0:1 compression ratio. Sold as a set, these flat-top pistons are made from 390 hypereutectic cast aluminum with 16% silicone. This material choice is ideal for street performance as it allows for tight clearances and minimal piston noise. The kit is a great way to gain displacement and power without the need for new cylinder castings. Note that the top compression ring requires additional clearance during installation. This kit provides a reliable, high-quality solution for riders looking to maximize their Twin Cam's potential.
Manufacturer part number: KB409C040.
Fitment
64 models07-17 Twin Cam
Dyna 20 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2008–2017 | Dyna Fat Bob FXDF |
| Harley-Davidson | 2012–2017 | Dyna Fat Bob FXDF 103 |
| Harley-Davidson | 2007–2017 | Dyna Low Rider FXDL |
| Harley-Davidson | 2014–2017 | Dyna Low Rider FXDL 103 |
| Harley-Davidson | 2016–2017 | Dyna Low Rider S FXDLS |
| Harley-Davidson | 2007–2017 | Dyna Street Bob FXDB |
| Harley-Davidson | 2014–2017 | Dyna Street Bob FXDB 103 |
| Harley-Davidson | 2013 | Dyna Street Bob FXDBA |
| Harley-Davidson | 2013 | Dyna Street Bob FXDBA 103 |
| Harley-Davidson | 2015 | Dyna Street Bob FXDBB |
| Harley-Davidson | 2014–2015 | Dyna Street Bob FXDBB 103 |
| Harley-Davidson | 2013–2016 | Dyna Street Bob FXDBP 103 |
| Harley-Davidson | 2016 | Dyna Street Bob Limited FXDBC |
| Harley-Davidson | 2016 | Dyna Street Bob Limited FXDBC 103 |
| Harley-Davidson | 2012–2016 | Dyna Switchback FLD |
| Harley-Davidson | 2012–2016 | Dyna Switchback FLD 103 |
| Harley-Davidson | 2008 | Dyna Wide Glide 105th Anv FXDWG |
| Harley-Davidson | 2007–2016 | Dyna Wide Glide FXDWG |
| Harley-Davidson | 2012–2017 | Dyna Wide Glide FXDWG 103 |
| Harley-Davidson | 2017 | Low Rider FXDL 103 |
Softail 26 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017 | Breakout FXSB |
| Harley-Davidson | 2008–2011 | Cross Bones FLSTSB |
| Harley-Davidson | 2017 | Deluxe FLSTN |
| Harley-Davidson | 2007–2017 | Fat Boy FLSTF |
| Harley-Davidson | 2012–2015 | Fat Boy FLSTF 103 |
| Harley-Davidson | 2013 | Fat Boy Lo Anv FLSTFB |
| Harley-Davidson | 2013 | Fat Boy Lo Anv FLSTFB 103 |
| Harley-Davidson | 2010–2017 | Fat Boy Lo FLSTFB |
| Harley-Davidson | 2012–2015 | Fat Boy Lo FLSTFB 103 |
| Harley-Davidson | 2016–2017 | Fat Boy S FLSTFBS |
| Harley-Davidson | 2013 | Heritage Softail Classic Anv FLSTC |
| Harley-Davidson | 2013 | Heritage Softail Classic Anv FLSTC 103 |
| Harley-Davidson | 2007–2017 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 2012–2015 | Heritage Softail Classic FLSTC 103 |
| Harley-Davidson | 2008–2011 | Rocker C FXCWC |
| Harley-Davidson | 2008–2009 | Rocker FXCW |
| Harley-Davidson | 2017 | Slim FLS |
| Harley-Davidson | 2017 | Slim S FLSS |
| Harley-Davidson | 2013–2016 | Softail Breakout FXSB |
| Harley-Davidson | 2013–2015 | Softail Breakout FXSB 103 |
| Harley-Davidson | 2007–2016 | Softail Deluxe FLSTN |
| Harley-Davidson | 2012–2015 | Softail Deluxe FLSTN 103 |
| Harley-Davidson | 2012–2016 | Softail Slim FLS |
| Harley-Davidson | 2012–2015 | Softail Slim FLS 103 |
| Harley-Davidson | 2016 | Softail Slim S FLSS |
| Harley-Davidson | 2007–2015 | Softail Standard FXST |
Touring 17 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2014 | CVO Limited FLHTK 103 |
| Harley-Davidson | 2013 | Electra Glide Ultra Limited Anv FLHTK |
| Harley-Davidson | 2010–2013 | Electra Glide Ultra Limited FLHTK |
| Harley-Davidson | 2010–2013 | Road Glide Custom FLTRX |
| Harley-Davidson | 2011 | Road Glide Custom FLTRX 103 |
| Harley-Davidson | 2015–2017 | Road Glide FLTRX |
| Harley-Davidson | 2015–2017 | Road Glide Special FLTRXS |
| Harley-Davidson | 2011–2017 | Road Glide Ultra FLTRU |
| Harley-Davidson | 2007–2017 | Road King Classic FLHRC |
| Harley-Davidson | 2011 | Road King Classic FLHRC 103 |
| Harley-Davidson | 2017 | Road King Special FLHRXS |
| Harley-Davidson | 2007–2017 | Street Glide FLHX |
| Harley-Davidson | 2011 | Street Glide FLHX 103 |
| Harley-Davidson | 2014–2017 | Street Glide Special FLHXS |
| Harley-Davidson | 2014–2017 | Ultra Limited FLHTK |
| Harley-Davidson | 2015–2017 | Ultra Limited Low FLHTKL |
| Harley-Davidson | 2017 | Ultra Limited Shrine FLHTK |
Trike 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2015–2017 | Freewheeler FLRT |
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