Manley Valve Spring Lift Kits
Increase the amount of valve travel without binding for use with high-performance camshafts with higher-than-stock lift. Kits are packaged with interference fit, reverse wound springs to reduce harmonics and control spring surge. Most kits are available with titanium collars for ultimate performance, or with steel collars as a lower cost alternative. Kits requiring special machining operations include complete instructions. Valve keepers are not include

Lift Kits for 1957 thru 1985 Sportster® Models
Stock-diameter springs with 20% more pressure. Includes steel top collars and uses stock lower collars. Springs 90 lbs. at 1.310", 300 lbs. at .810", bind at .750"..

.465" Lift Kits for Shovelheads
Use with stock or Manley thin-stem valves. Kits include springs, upper collars and use stock lower collars. Oversize springs require no machining. Springs 150 lbs. at 1.450", 300 lbs. at 1.000" bind
at .950".

.495" Lift Kits for Shovelheads
Same as '.465" Lift Kits' but with special lower collars for additional spring travel. Kits do not require cylinder head machining for installation

.600" Lift Kits for Evolution® Models
Kits for up to .600" lift on Evolution®  Big Twin and Sportster®  models 1984 to present. No machining required, steel or titanium top collars used with stock lower collars. Springs 170 lbs.at 1.800", 380 lbs. at 1.200", bind at 1.150".

Kibblewhite Lightweight Racing Valve Spring Kits
Matched Kibblewhite top-quality components improve valve train performance - especially important with high-lift cams. Kits include:
* Four 7075 T6 hard anodized aluminum retainers
* Four 15-degree machined pairs of heat treated steel keepers
* Four double racing valve springs with lower spring collars
* Installation instructions

Kibblewhite Valve Springs for Panheads and Shovelheads
High-performance 190 lb. valve spring set for Panhead and Shovelhead engines 1948 thru 1966.

V-Thunder™ Valve Spring Kits
A perfect complement for high-performance cams, V-Thunder®  kits provide strong street performance with up to .600" lift cams in the Standard kits or up to .675" lift cams with the severe service Super kits. For all Evolution®  Big Twins 1984 to present.

S & S VALVE SPRING KIT FOR BIG TWINS
Fits Panhead and Shovelhead models 1948-1984. This kit is designed to be used with stock style guides, bottom spring collars, 3/8" valve stems and keepers. Thin stemmed valves may also be used if the keepers used are designed to compensate for the difference in stem diameters. By grinding .060" to .090" off the tops of the valve guides, cams with lifts up to .550" may be used. Panheads usually require additional rocker cover to top collar clearance. Kit includes 4 aluminum top collars, 4 outer valve springs, 4 inner valve springs, and instructions.

S & S VALVE SPRING KIT FOR EVOLUTION
Fits Evolution® Big Twins 1984-up and Sportsters® 1986-up. Designed for use with stock style guides, valves and keepers. By grinding .030" off the bottom of the valve keepers, cams with lifts up to .550" may be used. Kit includes 4 inner and outer springs, 4 lightened steel top collars, 4 steel bottom collars, and instructions.

SIFTON VALVE SPRING KITS FOR BIG TWIN & SPORTSTER
Sifton high performance valve springs are made to give the increased spring pressure required with higher lift cams. Each set includes 4 double matched springs, 4 black upper collars, 4 sets of keepers.

SIFTON VALVE SPRINGS FOR PANHEADS AND SHOVELHEADS
Double-matched valve springs. Use with Sifton collars, keepers and valves for optimum performance. For Big Twin models 1948 thru 1984 (except Evolution® models).

CRANE PERFORMANCE VALVE SPRINGS AND RETAINERS
Manufactured from the finest quality spring wire and precision wound to exacting specifications. These high performance valve springs are subject to rigid quality control inspections both during manufacturing and prior to packaging. Spring sets are available alone or with chrome moly 4140 steel or light weight Titanium retainers. Retainer sets are also available separately. Sold in set of 4.

RevTech®-Valve Spring Kit for Evolution®  Models
The 3-piece valve springs which are similar to those used in USAC circle track cars, feature dual chrome-steel springs with flat wound dampers which eliminate spring surge. They will accept cams  of up to .600" lift and have higher spring pressures When installing performance cams, total spring than stock. The biggest single difference however,  is that the RevTech® engineers opted to use 10º,  top collars and keepers rather than the standard 7° items found in most manufacturer's kits. This means that the RevTech® spring kit is less likely to  spit out a keeper during high-speed operation or have a valve pull thru. Complete with heat-treated steel top and bottom spring collars, keepers and  3-piece springs.

RevTech® Valve Spring Shim Kit
A 12-piece kit that includes 4 shims each of .015", .030", and .060" thick sizes that permit precise shimming form .015" to 105" in .015" increments, enough to do one set of heads.

Andrews Valve Parts for Shovelhead and Evolution® Engines
When installing performance cams, total spring assembly height should be checked before operation. The valve spring collars and springs offered here provide correct total spring assembly height without complicated machining on the heads themselves.

Low Profile Lower Spring Collars for Shovelheads
Low-profile lower spring collars for 74" and 80" motors. Similar to 1980-up OEM collars, but low profile for easier installation of high lift cams. Required if using 1980 or later style valve guides which use seals like CCI # 24-347. Made form heat-treated steel.

High Lift Spring Set for Evolution Motors
For Big Twin and Sportster® motors. When used with the titanium upper collars listed below, cam lifts of over .550" can be achieved. Installation does not require machining.

Titanium Upper Spring Collars for Evolution® Motors
For all Big Twin and Sportster® motors. Stronger than Original Equipment with .050" more travel and a weight savings of 50%. Use stock keepers.

Medium Lift Upper Spring Collars for Shovelheads
For 74" and 80" motors and designed to add .060" spring travel to stock springs without other modifications. Simplify the installation of Andrews 'B' or '#2' cams in stock Shovelhead motors.Heat-treated steel.

Motor Factory American Made Valve Spring and Collar Kits
Top quality American Made replacement valve spring kits for Big Twin and Sportster® engines 1948-up. Designed for use with stock style guides and valves, each kit comes complete with inner and outer springs, steel upper and low and valve keeper keys. Sold in sets of 4.

Crane Valve Spring Shim Kit for Evolution® Models
For all Evolution® Big Twin and Sportster® engines. The 12-piece kit includes 4 shims each of .01 5", .030" and .060" thick sizes that permit precise shimming from .01 5" to .105" in .01 5" increments, enough to do one set of heads. These shims should not be used with Original Equipment springs.