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

1999-'06

www.sscycle.com

Fitment • B3 Heads

• For S&S® Super Stock®, Special Application, or other heads which can accept a larger than stock O D outer spring Stock spring O D is approximately 1 400" See descriptions below for outer spring O D of specific spring kits S&S racing valve springs are designed to be used with “no shoulder” style valve guides Special keepers fit stock 5/16" diameter stemmed valves and S&S collars only Kit Contents 4 titanium top collars, 4 bottom collars, 4 outer, 4 middle, and 4 inner valve springs, 8 valve keepers, 4 each 015" shims and 030" shims

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

.720" Lift Triple Valve Spring Kit With Titanium Top Collars • Typically used with bronze guides

• 1 975" installed height • 1 570" O D outer spring • Valve spring seat pressure 216 lbs • Valve spring open pressure @ 720" is 540 lbs • Coil bind @ 1 130"

90-2079

Valve Spring Kit Replacement Parts For B3 Heads Description

Part #

Top collar - titanium 660"/ 720" lift Bottom collar - 660"/ 720" lift Valve keeper 5/16" valve stem SA

90-2155A 90-2090 90-2153A 90-2086 50-7161 90-2087 90-2198

each each each

Shim - 015"

720" Lift Valve Spring Kit For B3 Heads Description

5 pack

Part #

each

Shim - 030"

720" Lift Triple Valve Spring

90-2080

5 pack

650" VALVE SPRINGS KITS FOR S&S HEADS

650" Lift Valve Spring Kit For S&S Heads Description Spring, Kit, Valve, Conical, 650", Chrome Silicone Steel, 1984-2004 bt, 1986-2003 xl Fitment • S&S® heads Features And Benefits • Works well with cams up to 650" lift • Manufactured from ultra clean high silicon Kobe alloy wire then micro shot peened and nitrided • CNC machined 9˚ locks • High performance conical single wire spring • Chromoly forged retainers Kit Contents • Valve keepers, top & bottom collars, springs, shims

S&S® 650" Lift Valve Spring Kit For S&S Heads Lift

Part #

Installed Height Seat Force Force @ Max Lift

Max RPM

900-0050

650" 1 860"

178 lb

376 lb

6500

3-42