Manley NexTek Drag Race Valve Springs 1.540in OD 1.000in Lift 425lb Installed Set of 16
⚠ Call for Availability
This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
Regular price
$1,110.76
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
Manley NexTek Lightweight Dual Drag Race valve springs in a double configuration, built for Alcohol and Fuel Classes, Pro Mod applications. The outer spring measures 1.540 in. O.D. and the set is rated to 1.000 in. maximum valve lift.
Key Features
- Manufactured from specially processed high tensile chrome silicon steel
- Shot peened to MIL spec for maximum fatigue life
- Multi-step heat treating minimizes load loss over a run
- Computer-aided design work targets valve bounce and valvetrain separation
- Tightly controlled open end flatness reduces valve stem side loading
Fitment
- Recommended use: Alcohol and Fuel Classes, Pro Mod
Product Details
- Series: Manley NexTek Lightweight Dual Drag Race
- Spring Type: Double
- Maximum Valve Lift: 1.000 in.
- Outer Spring O.D.: 1.540 in.
- Inner Spring I.D.: .710 in.
- Installed Pressure: 425 @ 2.300 lbs.
- Open Pressure: 1389 @ 1.300 lbs.
- Spring Rate: 964 lbs./in.
- Coil Bind Height: 1.215 in.
- Weight: 154 grams each
- Quantity: Set of 16
- Manufacturer Part Number: 221461-16
Shipping Height: 4.0
Shipping Length: 16.0
Shipping Width: 4.0