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

1936-'84

www.sscycle.com

For 1936–’84 Big Twin

Fitment • 1936–’84 OHV big twins Features • All steel construction–superior dimensional stability, abrasion • Welded-in screen • Higher flow than stock • Elongated breather pocket scavenge hole for increased suction Options • Standard diameter for replacement or new builds • + 030" diameter for damaged engines • Breather gear only kits • Breather gear and shim kits

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

33-4250

Breather Gear Kits for 1936–'99 Big Twin Year of Camshaft

Standard Size

+ 030" Oversize

1936–Early '47 1948–Early '77 Late 1977–'99

106-6010 33-4253 33-4250

—

33-4263 33-4260

33-4241

106-5070

Breather Gears only for 1936–'99 Big Twin Year of Camshaft

Standard Size

+ 030" Oversize

106-5070 25300-36 33-4246 25313-73

1936–Early '47

106-6012

1948–Early '77

33-4247

33-4241 25310-82A, 25313-77B, 25311-90

Late 1977–'99

33-4242

33-4249

Breather Gear Spacing Shim Kit Description

Part # Fits stock 1979–’82 and all S&S® steel breather gears Includes one of each thickness: 100", 110", 120", 130", 140", 150", 160", 170" 33-4249

5-44