S&S Cycle · New
S&S Cycle 86-21 Sportster Models 1250cc Conversion Kit - Wrinkle Black
MPN 910-0691 · Store SKU ssc910-0691
Supplier stock checked 11/7/2026, 2:56:15 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
This kit converts 1986-'21 883cc and 1200cc HD Sportster models to 1250cc displacement. No machining or rebalancing is required. 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. 883 cylinder heads may not be used with this kit. For the best performance CNC head porting, performance cams, exhaust and intake upgrades are recommended. Black, Flat Top, 10.3:1
Manufacturer fitment & guides
Check 910-0691 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
