1926-1984 Vintage Models - S&S Cycle

1926-1984 Vintage Models
Flathead Power ® by S&S ®
Forged 3-5/8" Bore Pistons
for 1936-’84 OHV Engines
This new forged 35/8" bore stroker piston replaces several cast and forged big bore pistons that S&S previously
offered. Applications for this piston include 88" (41/4" stroke), 93" (41/2" stroke), and 96" (45/8" stroke) engines
with stock 81/2" diameter flywheels, and 98" (43/4" stroke) and 103" (5" stroke) engines with 81/4" small diameter
flywheels. As with the new stock bore stroker piston, the modern metallurgy and advanced skirt profiles allow a
relatively close piston fit for low engine noise and long engine life.
Fitment
• 88", 93", 96", 98" and 103" engines for 1936-’84 OHV big twins
Features and benefits
• Forged pistons for superior strength
• Dome volume 30cc
• Modern alloys and piston skirt profiles for low noise and long engine life
Options
• Available in 35/8" Standard. +.010", .020", .030", and .060"oversizes
• S&S will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to
them as an option)
Kit Contents: (Sold In Sets Only)
• Two pistons with wristpins & keepers
• Piston rings
• Instructions
106-5535
PERFORMANCE
PARTS
Parts for
Twin Cam 96 /103
2007-2013
Parts for
Twin Cam 88 ®
1999-2006
Parts for
Evolution ®
1984-1999
Parts for
Sportster ® & Buell ®
1986-2013
Parts for
Vintage Engines
1926-1984
S&S® Flathead Power® 35/8" Bore Forged Piston Application Chart
Displacement
Wristpin
Deck Height
Stroke
Flywheel
Diameter
Compression Ratio
Cylinder Length
SH-Series & P-Series Engines KN-Series Engines
88" 1.260" 41/4" 81/2" 7.5:1 5.330" –
93" 1.260" 41/2" 81/2" 8.5:1 5.405" 5.625"
93" HC 1.260" 41/2" 81/2" 9.1:1 5.363" –
96" 1.260" 45/8" 81/2" 9.1:1 5.440" –
98" 1.260" 43/4" 81/2" 8.9:1 5.530" –
103" 1.260" 5" 81/4" 9.7:1 5.630" –
Parts for
X-Wedge®
2007-2013
Parts for
Victory®
2003-2013
Racing
Products
S&S® Forged 35/8" Bore Piston Sets For 1936-’84 OHV Big Twins
Oversize
Wristpin
Deck Height
Part # MSRP Replacement Rings
Standard (35/8") 1.260" 106-5535 $289.95 94-1220X
+.010" 1.260" 106-5536 $289.95 94-1221X
+.020" 1.260" 106-5537 $289.95 94-1222X
+.030" 1.260" 106-5538 $289.95 94-1223X
+.060" 1.260" 106-5789 $289.95 94-1226X
Recommended Piston Fit Close: .003" - .0035" Loose: .004" - .005"
MSRP
$29.95
$29.95
$29.95
$29.95
$29.95
Replacement Parts
Description Part #
Wristpin .791" diameter 106-6123
each
Wristpin keeper, c-clip
94-9254-S
(H-D®#22589-83A, 22589-83B)
4 pack 94-9254
MSRP
$18.70
$1.00
$2.95
Tools & Shop
Supplies
Dealer Services
& Promo Items
Warranty &
Company Policy
NOTES
Compression ratios will change when replacing existing pistons in S&S engines with this series of forged pistons. If higher compression is desired, we suggest
shortening cylinders, or decking heads to achieve the desired compression ratio. A change of .060" will produce approximately 1 point of change in the compression
ratio.
S&S offers machine shop services through the S&S Service and Speed Center. New pistons can be fit to your existing cylinders for a reasonable charge, and
cylinders can be shortened to your specifications if higher compression ratio is desired.
Visit us at www.sscycle.com
OEM Cross Reference
Appendix & Index
5-47