S&S Cycle

1999–2006 big twins

4" BORE BOLT-IN SIDEWINDER ® BIG BORE KITS

96 ™ /103 ™ /110 ™ Street Rod ™ Milwaukee-Eight ® 1999–2006 Twin Cam 88 ® 1986–2019 Sportster ® & Buell ® Indian ® Models

S&S 4" big bore cylinder and piston kits boost 88" Harley-Davidson® big twin engines to 100". 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 • 88 engines end up at 100" • Complete kits include cylinders, pistons, gaskets, and instructions • Choose from wrinkle black or silver powder coat cylinders – matches stock finish

2007–2017 Twin Cam

FITMENT • 1999–2006 big twins

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

1999–2006

4"

4.00"

4.937"

Forged

8.75 pop up

10.8:1

10.5:1

10.1:1

2014–2019 Street ® &

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

Finish

Part #

910-0642

1999–2006 big twin

4"

Silver

100

910-0646

1999–2006 big twin

44

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

Tools & Shop Supplies

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

Warranty & Company Policy

120

100 110

90

80

70

Index

Appendix &

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

163