S&S Cycle

CYLINDERS WITH PISTONS KIT FOR 1936–’47 OHV BIG TWINS

FITMENT • 1936–’47, 74", and 93" knuckle engines • S&S® Vintage KN-Series engines FEATURES AND BENEFITS • High strength engineering-grade grey cast iron • Excellent wear resistance • Durable powder coat finish—high temp gloss black

3-7/16" & 3-5/8" BORE CYLINDERS WITH PISTONS KIT FOR 1936–’47 OHV ENGINES Piston Series Displacement Stroke Bore

Cylinder Length Compression Ratio

Part #

106-4519

74 LC Forged 35/8" Forged

74" 93"

331⁄32"

37⁄16" 35⁄8"

5.530" 5.625"

8:1

41⁄2" 106-2402 Cylinders with pistons include cylinders, piston kit, and head & base gaskets. All piston kits include rings, wristpins, and clips. Recomended Piston Fit: Close: .0035" to .004" Loose: .0045" to .0055". NOTES: S&S® cylinder heads for 1940–’47 OHV big twins are machined for 7/16-20 head bolts and are not compatible with stock 7/16-16 head bolts. If using S&S heads with 37/16" bore cylinders, stock style hex head bolts for 1948–’65 big twins, part #106-4523 may be used. S&S 35/8" bore cylinders require the use of S&S 1966–'84 style 12 point head bolts part #93-3024, due to clearance issues. Stock 1930–’78 hex style base nut kit is available in cadmium plate, part #106-4522, for 37/16" bore cylinders only. Stainless raised hex base nuts, part #93-3063-S, are required for 35/8" bore cylinders. 8.2:1

CYLINDERS

37/16", 31/2", & 35/8" BORE CYLINDERS FOR 1966–'84 BIG TWIN—GLOSS BACK Displacement Bore

Cylinder Sets

91-9011 91-9021 91-9000 91-9100 91-9030 91-9400 91-9200 91-9300

74", 84", 86", 88' Stock Bore Strokers

37/16" 31/2"

80", 84"

88" 93"

93"HC

35/8"

96"

98" SD † 103" SD †

Special Order 91-9307 *** † Small Diameter Flywheels **Some early S&S 93" and 96" Sidewinder® Kits were sold with 5.530" length cylinders. Use 91-9200 for replacement cylinders. ***Special Order: Download the Special Order Form at sscycle.com/soforms. Individual cylinders and cylinder sets without pistons are bored slightly under nominal size and are not honed. Individual cylinder assemblies and cylinder kits with pistons are honed to fit the pistons included. Specify

37/16" & 35/8" BORE CYLINDERS FOR 1936–’47 OHV ENGINES—HIGH TEMP GLOSS BLACK Displacement Bore Cylinder Sets

106-4512 16492-41, 16483-41

74"

37/16"

106-4655

93"

35/8"

Cylinder set include cylinders, head gaskets, and base gaskets.

142 S&S Vintage 1926–1999 Order 608-627-1497