910-0844A 129" big bore kit. Black cylinders
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- S&S
- Part Number
- 910-0844A
- OEM Reference
- —
- Pack Quantity
- Each
- Category
- Cylinder And Piston Kits
- VAT Rate
- 20%
About This Product
S&S 129-inch big bore kit with black cylinders. It fits 2017 to 2024 M8 models that left the factory with the 107-inch motor. Displacement goes to 2102cc. The kit works with factory heads and crankcases. Stock engine height stays the same. It includes forged 4.320-inch pistons, black wrinkle powder-coated cylinders, MLS head gaskets, and an S&S cam cover badge. S&S recommends a high-flow cam and proper fuel tuning.
Manufacturer part number: 910-0844A.
Fitment
17-24 M8 with 107" engine
Related Products
View all →
S&S
88" to 100" conversion cylinder & piston kit. Silver
S&S
883-1250 Hooligan big bore cyl. & piston kit
S&S
107" to 124" big bore conversion cylinder & piston kit
S&S
883-1200 Hooligan big bore cyl. & piston kit
S&S
96"/103" to 110" conversion cylinder & piston kit
More from S&S
View all →
90-99 B.T. pinion shaft gear/conversion kit. Blue
Manifold mounting flange set
Rear belt XN7 carbon cord. 14mm, 1-1/8", 130t
Rear belt XN7 carbon cord. 24mm wide, 140T
90-99 B.T. pinion shaft gear/conversion kit. Black
Pinion gear L77-89. Green
00-06 Softail 4-5/8" stroke flywheel assembly
00-06 Softail 4-3/8" stroke flywheel assembly
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.