SECTION 1: 2007-2012 BIG TWINS - S&S Cycle

S e ction 1:
S&S ®
Parts for
Twin Cam 96 /103
2007-2012
Parts for
Twin Cam 88 ®
1999-2006
PERFORMANCE
PARTS
2007-2012 BIG TWINS
3-7/8" BORE REPLACEMENT CYLINDERS AND PISTONS
These 3 7/8" bore cylinders are a good choice for installation and repair of 95" and 103" kits. Superior
materials, thicker casting in critical areas and bigger cooling fins, combined with excellent wear resistance
ensure excellent engine life.
FITMENT
• Cylinders can be used for stock replacement
• 103" kit for 2007-’12 models – pistons have 5cc pop up dome
91-7045
Parts for
Evolution ®
1984-1999
Parts for
Sportster ® & Buell ®
1986-2012
Parts for
Vintage Engines
1926-1984
FEATURES AND BENEFITS
• Installation of S&S cylinders instead of boring stock cylinder saves time and labor when installing
103" kits
• S&S 37/8" bore cylinders require no crankcase machining to install
• Piston weight for 103" kits are the same as stock – no flywheel rebalancing
• Forged, coated pistons and S&S cylinders are compatible with stock or S&S Super Stock® heads
• Valve pocket recesses in S&S pistons are enlarged for oversize valves and higher lift cams
Wrinkle black powdercoat
OPTIONS
• Silver or wrinkle black powdercoat finish
Special Order OPTIONS
• Natural, diamond cut, polished and full polished
106-0432 Series Piston
Parts for
X-Wedge®
2007-2012
Parts for
Victory®, Off-road
& Metric
S&S® 37/8" BORE CYLINDERS
Displacement Stroke
Cylinder
Length
Compression Ratio Cylinder Only (Single) Cylinders Only (Set) Cylinders w/Pistons (Set)
Stock Heads 89cc S&S Heads 79cc S&S Heads Silver Black Silver Black Silver Black
103" 4 3/8" 937 10.1:1 9.8:1 10.8:1 106-4061 106-3128 106-4137 91-7045 – –
Special Order – – 91-7506*
Cylinder w/ piston kits include fitted pistons and cylinders, head gaskets, base, and exhaust gaskets
*Special Order: Download the Special Order form at sscycle.com/soforms
Racing
Products
Displacement
S&S® 37/8" BORE PISTONS
Forged Piston Kits
Rings, chromoly faced
Piston Type Deck Height Stroke Standard +.005" +.010" +.020" Standard +.005" +.010" +.020"
Tools & Shop
Supplies
Dealer Services
& Promo Items
Warranty &
Company Policy
OEM Cross Reference
Appendix & Index
103" Flat top, 5.2cc 1.083" 4 3/8" 106-0432 106-0433 106-0434 – 106-1581 106-1582 106-1583 –
Piston kits include set of pistons, rings, wristpins, and clips
Wristpin
For 103 CID, .927" x 2.825" .............................. 106-1052
Keeper .927"
Each .......................................... TÜV 7 94-9278-S
2 pack. ........................................ TÜV 7 94-9278-2
4 pack. .........................................
TÜV 7 106-2304
Gaskets & Dowels
Description S&S Part No. H-D® Part No.
MLS Head Gasket, .045" (each) 106-3714
MLS Head Gasket, .030" (2 pack) 900-0216
Base O-ring (each) 50-8048 (H-D® #11256)
Exhaust Gasket (each) 106-5029 (H-D® #65324-83A, 65324-83B)
Oil Return O-ring (each) 50-8008 (H-D® #11105, 11275)
Cylinder Dowel (each) 50-8177 (H-D® #16595-99A)
NOTES:
• For 95" and 106" ‘cylinder only’ kits, pistons must be measured and cylinders bored/honed accordingly. Recommended piston fitment:
• Close: 0.0020" – 0.0025" Loose: 0.0032" – 0.0045"
• S&S 3 7/8" pistons for 103" kits are machined to such close tolerances that it is not necessary to measure the piston. Additionally, the low friction coating on the piston skirt makes taking
measurements very difficult. Therefore, hone cylinders to nominal diameter +/- 0.0005" for correct clearance.
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Order toll free 866-244-2673