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S&S 1250 Big Bore Kit For Harley Sportster
This kit converts 1200cc HD Sportster models to 1250cc displacement. No machining or rebalancing is required. Forged pistons have larger than stock valve pockets and accept up to 2.00" valves. Kit contains forged flat topped 3 9/16" bore pistons with coated piston skirts, S&S 3-9/16" bore cylinders, MLS head gaskets, base gaskets, exhaust gaskets, assembly lube, and instructions.
Features:
- 10.3:1 Flat Top Pistons
- 11.2:1 5.5cc Domed Pistons
- Available in silver powder coat or wrinkle black powder coat finish
- Made in the USA
Product Style | RevZilla Item # | Store Sku | MFR. Product # | Availability |
---|---|---|---|---|
Product Style Black / 10.3:1 Compression Ratio | RevZilla Item #1181564 | Store Sku | MFR. Product #910-0691 | AvailabilityIn Stock: Ships next business day |
Product Style 10.3:1 Compression Ratio / Silver | RevZilla Item #1181565 | Store Sku | MFR. Product #910-0689 | AvailabilityIn Stock: Ships next business day |
Product Style Black / 11.2:1 Compression Ratio | RevZilla Item #1181566 | Store Sku | MFR. Product #910-0692 | AvailabilityIn Stock: Ships next business day |
Product Style Silver / 11.2:1 Compression Ratio | RevZilla Item #1181567 | Store Sku | MFR. Product #910-0690 | AvailabilityOnly 2 Left: Ships next business day |
This Product Fits
- Harley Davidson
- Sportster Custom XL1200C 1996-2019
- Sportster Custom XL883C 1998-2009
- Sportster Deluxe XLH883DLX 1989, 1990, 1991, 1992
- Sportster Forty-Eight Special XL1200XS 2018, 2019
- Sportster Forty-Eight XL1200X 2010-2022
- Sportster Hugger XLH883HUG 1988-2003
- Sportster Iron XL1200NS 2018, 2019, 2020, 2021
- Sportster Iron XL883N 2009-2022
- Sportster Low/SuperLow XL883L 2005-2019
- Sportster Low XL1200L 2006-2011
- Sportster Nightster XL1200N 2007-2012
- Sportster Roadster XL1200CX 2016, 2017, 2018, 2019, 2020
- Sportster Roadster XL1200R 2004, 2005, 2006, 2007, 2008
- Sportster Roadster XL883R 2002-2012
- Sportster Seventy-Two XL1200V 2012, 2013, 2014, 2015, 2016
- Sportster Sport XL1200S 1996-2003
- Sportster SuperLow XL1200T 2014, 2015, 2016, 2017
- Sportster XL883 2004-2009
- Sportster XLH1100 1986, 1987
- Sportster XLH1200 1988-2003
- Sportster XLH883 1986-2003
S&S Cycle 1250 Big Bore Kit For Harley Sportster 1986-2022 Resources
Product Description
Part Numbers
Fitment
Resources
2 Customer Reviews
5/5
10 Questions & 2 Answers
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