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

XL / RA1250

www.sscycle.com

31-6510

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

90-4050

Fitment • 1986–‘03 Harley-Davidson® Sportster® models • 1994–’02 Buell® models Features And Benefits • OEM-style "umbrella" fittings are included with billet rocker boxes for 1993–’99 big twin engines with cylinder head venting • S&S billet rocker covers are available in three finishes: show-quality chrome, or unfinished. Unfinished is ideal for powder coating and other custom cosmetic treatments • Installation on stock and most comparable sized engines can be performed without removing the engine from the frame

Kit Contents • Covers

• Gaskets • O-rings • Mounting hardware

The performance-oriented design of the billet rocker boxes permits valve lifts up to .710" with stock or S&S Super Stock® heads, and up to .810" with S&S Special Application heads. S&S roller rocker arms are recommended for high lift cams. S&S billet rocker covers accept valve springs up to 1.660" O.D. without modification. Cylinder heads must be set up correctly for high-lift cams, and it remains the builder’s responsibility to confirm all clearances. Kits include front and rear cover assemblies with base and top cover, rocker shaft supports, gaskets and o-rings, and instructions

Replacement Gasket Kit For Sportster Description

Billet Rocker Cover Kits For Sportster Finish Part # Chrome

Part #

Includes Gaskets For Two Rocker Covers

90-4049

90-4050 USA

Die Cast Rocker Cover Kits For Sportster Finish

Part #

Chrome

90-4095

Start Boost Relay for 1971-'99 XL Description Start Boost Relay, 1970-'99 bt, 1971-'99 xl

Part #

550-0503

6-40