S&S Cycle - S&S Performance Parts 2025 L - Volume 67

1999-'06

www.sscycle.com

Features And Benefits • 3 937" bore • Cylinder and piston kits make going to larger bore

Fitment • 1999–2006 big twin Kit Contents • S&S cylinders with gaskets • Piston set with rings, wristpins and wristpin clips

sizes easy—no machining required • Stock engine height is maintained

1 -2017-UP 2- 2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX 97" 98"

• 11 fin cylinder design closely resembles OEM shape and come prefinished—ready to install • Increased fin area for better heat dissipation • Centrifugal cast, gray iron liner features 40,000 psi tensile strength—superior wear and performance • CP Pistons are recognized as industry leaders, and provide exceptional wear, performance and noise characteristics

Not for use with S&S 79cc Cylinder Heads

98" Big Bore Kit Specification Chart

Compression Ratio (with provided 045" head gasket) 83cc CNC Ported Stock Heads 85cc Stock Heads

Cylinder Length

Forged Piston Type

Displacement

Stroke Bore

89cc S&S Heads

4"

3 937"

4 937"

10cc Dome

10 6:1

10 4:1

9 9:1

Cylinder w/piston kits include pistons and cylinders that require no boring or honing

98" Big Bore Kits Cylinder Finish

Part #

Silver powder coat

910-0482

Wrinkle Black powder coat 910-0481 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

Fitment • 1999–'06 big twins

• Maintains stock engine height • 11 fins and full fin pattern on cam side closely resembles OEM shape Options • Oversize pistons available page 3-37 Kit Contents • S&S cylinders with gaskets • Piston set with rings

Features And Benefits • No case machining required

• Bolt-on 9 to 10 cubic inches—cylinders do not require crankcase machining to install • Piston weight for 97" kits are the same as stock, requiring no flywheel rebalancing • Forged coated pistons are compatible with stock or S&S Super Stock® 79cc & 89cc heads • Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams

97" Big Bore Kits Specification Chart

Compression Ratio

Cylinder Length

Forged Piston Type

Displacement

Stroke Bore

83cc CNC Ported Stock Heads

79cc S&S Heads

85cc Stock Heads

89cc S&S Heads

4"

3 927" 4 937"

3cc Dome

10 3:1

99:1

97:1

93:1

Cylinder w/piston kits include fitted pistons and cylinders that require no boring or honing.

97" Big Bore Kits Cylinder Finish Silver powder coat

Part #

910-0201

Wrinkle Black powder coat 910-0205 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

S&S® highly recommends installing a performance cam for easier starting and better engine performance. S&S high flow cylinder heads will provide further horsepower gains. For an additional .2 bump in compression, order .030" thick head gaskets #900-0605 (2 pack). Remember to check your clearances. These kits require tuning.

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