S&S Cycle · New
S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders
MPN 910-0843A · Store SKU ssc910-0843A
$1,643.95
CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.
Supplier stock checked 11/7/2026, 3:38:55 PM UTC. Adding a part does not reserve it.
30-day returns for unopened, unused new parts
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
The biggest Big Bore possible with a slip in kit! These S&S cylinder and piston kits takes your 107" M8 to 129" and the 114" to 132"
Manufacturer fitment & guides
Check 910-0843A 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.
