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S&S BIG BORE KITS FOR MILWAUKEE EIGHT

S&S BIG BORE KITS FOR MILWAUKEE EIGHT

S&S 131CI & 136CI BIG BORE STROKER CYLINDERS FOR MILWAUKEE EIGHT

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S&S 4.32" BIG BORE KITS FOR MILWAUKEE EIGHT

S&S 4.32" BIG BORE KITS FOR MILWAUKEE EIGHT

These Big Bore cylinder and piston kits in combination with the stock 4 5/8" crankshaft in 2023 to present 121CI VVT engines or separate available 4 5/8" stroker crankshafts for other 2017 to present models enlarge the displacement of your M-8 engine to a massive 131CI (2,151cc) for the 4.250" kits or 136CI (2,229cc for the 4.320" bore kits. A huge displacement increase means huge power increase. Cylinder kits and crankshaft work with the stock crankcases and retain the stock engine height. The powder coat finish matches perfectly with the OEM engine finish. Cylinder kit includes two cylinders, two pistons, two pins, four clips, two ring sets and head-, base-, and exhaust port gaskets. Also included is an exclusive S&S 131CI or 136CI cam cover badge. The 4 5/8" stroke crankshaft must be ordered separately. Pistons work with both OEM style tapered wrist pin ends or High Performance full width piston wrist pin ends. As the stock cylinder head bolts are a single-use design you will also need eight stock style head bolts or a set of re-usable S&S High Performance head bolts. Fits all 2017 to present Touring, all 2017 to present Trike and all 2018 to present Softail.


Specifications

4 1/4" bore cylinder & piston kits

Article number Description Retail price Add to cart
795054
Black with highlighted fins 28 296,52 kr
795055
All black 28 296,52 kr
795056
Granite with highlighted fins 28 296,52 kr

4.320" bore cylinder & piston kits

Article number Description Retail price Add to cart
795119
Black with highlighted fins 29 022,21 kr
795120
All black 29 022,21 kr
795121
Granite with highlighted fins 29 022,21 kr

4 5/8" stroke crankshafts

Article number Description Retail price Add to cart
788974
Complete flywheel assembly with tapered piston wrist pin ends and balancer gear installed 29 664,09 kr
788977
Complete flywheel assembly with full width piston wrist pin ends and balancer gear installed 34 046,85 kr
Cylinder head bolts
Article number Description Retail price Add to cart
782792
Cylinder head bolt, each, 8 required (OEM 10200303) 122,13 kr
789136
S&S re-useable head bolt kit, includes eight pcs. head 12-point black oxide coated bolts (OEM 10200303) 2 774,57 kr

Recommended Retail Prices include 25.00% sales tax.

Prices exclude shipping, import duties and installation.

Prices are based on EUR to NOK interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.