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Kibblewhite Valve Spring Kit — 0.415 Lift — Knucklehead '36-'47
In warehouse stock

Kibblewhite Valve Spring Kit — 0.415 Lift — Knucklehead '36-'47

Kibblewhite · #0926-1441 · Top End / Engine
  • Designed to give stock pressures and work with stock cam profiles
  • Retainers, keepers, and bases are modeled using FEA (Finite Element Analysis) to maximize mechanical strength
  • Springs are wound from Super Clean chrome silicon valve spring wire that has been heat treated and shot peened
  • Manufactured to original O.E.M. specifications using premium modern materials, design protocols and manufacturing techniques
  • Made in the USA
$135.57
In stock. Ships in 2–4 business days · free shipping over $150.
View cart & check out →
Questions? Call the shop: 801-361-3010
Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014
Description & features5 features

Kit Includes:

• 4x CrSi Valve Springs

• 4x H.T. Steel Retainers

• 4x H.T. Steel Basewashers

• 4x H.T. Steel Keepers (Pair)

  • Designed to give stock pressures and work with stock cam profiles
  • Retainers, keepers, and bases are modeled using FEA (Finite Element Analysis) to maximize mechanical strength
  • Springs are wound from Super Clean chrome silicon valve spring wire that has been heat treated and shot peened
  • Manufactured to original O.E.M. specifications using premium modern materials, design protocols and manufacturing techniques
  • Made in the USA
Specifications13 specs
Application
Exhaust, Intake
Spring Lift
0.415"
Model
OEM Replacement
Spring Open Pressure
270 lb
Spring Seat Pressure
127 lb
Units
Kit
Collar Material
H.T. Steel
Material
Chromium Silicon Alloy
Riding Style
Street
Type
Valve
Shipping weight
1.05 lb
Package size
8.3 × 5 × 2.4 in
Country of origin
USA
Fitment2 models · Harley-Davidson
Harley-Davidson2 models
  • EL1936–1947
  • Knucklehead FL1941–1947
Fitment comes from the distributor’s catalog. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.
Part numbers
Salto part #
0926-1441
Kibblewhite part #
20-20425
Shipping

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

Questions4 answers
Is it in stock?
Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.
How fast will it get to me?
Usually 2–4 business days by ground.
Will it fit my machine?
The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine Kibblewhite?
Yes. It ships new from the same distributors the big online stores buy from — Kibblewhite part #20-20425.

More Kibblewhite top end