Engines and Components Camshafts and Valvetrain

COMP Cams

COMP Cams Valve Spring 1.525in Outer W/D

$13.95

SKU: C007 911-1

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The COMP Cams 911-1 is an engine valve spring designed for performance applications. This single spring includes a damper and features specific dimensions such as a 1.2-inch coil bind height, 1.9-inch seat height, and a 373 lbs/in spring rate. It is compatible with retainer part number 748-1 and shims 4757.
Show original supplier description

Part #: 911-1

Single Valve Springs from COMP Cams allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today's engine builders and racers.

Engine Valve Spring

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Vehicle Symptoms
  • Ticking noise from valvetrain at idle
  • Rough idle or misfire under load
  • Engine feels sluggish above 5000 RPM
  • Loss of power during acceleration
  • Valve float causing hesitation at high RPM
Relevant Conversations
  • ticking noise from engine after cam swap
  • COMP Cams 911-1 valve spring specs
  • symptoms of bad valve springs in LS engine
  • how to replace valve springs without removing heads
  • valve float fix for high lift cam
  • COMP Cams vs Manley valve springs
  • best valve springs for 5.3L LS
  • valve spring install time for LS1
  • rough idle after cam install
  • valve spring upgrade for 400+ hp build

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandCOMP Cams
Part NumberC007 911-1

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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