S&S Cycle

4" BORE BOLT-IN SIDEWINDER ® BIG BORE KITS

S&S 4" big bore cylinder and piston kits boost 96/103" HD® big twin engines to 110". These bolt-in kits don’t require any machining, rebalancing or engine removal and include just about everything you’ll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining! FEATURES & BENEFITS • Bolts in. No machining, balancing, or splitting the crankcases • 96" and 103" engines end up at 110" • Complete kits include cylinders, pistons, gaskets, and instructions • Choose from wrinkle black or silver powder coat cylinders – matches stock finish

FITMENT • 2007–17 big twins (except 2017 touring models)

SPECS FOR S&S 4" BORE BOLT-IN CYLINDER & PISTON KITS

Compression Ratio

Year

Stroke

Bore

Cylinder Length

Piston Type Dome Volume

83cc CNC Heads

85cc Stock Heads

89cc S&S Heads

2007–2017

4 3/8

4.00"

4.937"

Forged

.75 pop up

10.7:1

10.5:1

10.2:1

4" BORE BOLT-IN SIDEWINDER® BIG BORE KITS Displacement Year Stroke

Finish

Part #

2007–’17 big twin (except 2017 touring) 2007–’17 big twin (except 2017 touring)

910-0650

43/8"

Silver

110

910-0651

43/8"

Wrinkle Black

DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTOR VEHICLE UNDER THE CLEAN AIR ACT

These dyno results from our DynoJet® 250i chassis dynamometer clearly show the performance increases available with the S&S bolt-in 4 inch bore kits. The lowest (red) set of curves represents a stock 88 cid engine in a 2004 Harley-Davidson® FLHR Road King®. The next curves above the stock baseline (blue) shows the performance of the S&S 100” bolt-in big bore kit. The highest set of curves show the results from an S&S 110” big bore kit installed in a 96 cid engine. The engines with the S&S 100” and 110” kits were also set up with S&S 585 cams, Power Tune® headers, MK45 muffler, and the stock EFI throttle body with an S&S Stealth air cleaner.

Dyno S&S®100&1104”BigBoreKit

Stock88 PeakCorrectedHP

S&S 100”Kit PeakCorrectedHP

S&S 110”Kit PeakCorrectedHP

72.95 90.91

100.30 113.07

101.39 118.92

PeakCorrectedTorque

PeakCorrectedTorque

PeakCorrectedTorque

120

100 110

90

80

70

Not for use with S&S 79cc Cylinder Heads. Not for use on trike models. NOTES

60

50

40

2500 3000 3500

EngSpd RPM 4000 4500 5000 5500 6000 6500

72 Order 608-627-1497 S&S Late Models 1999–up