Manley NexTek Drag Race Polished Valve Springs 1.640in OD .900in Lift 280lb Installed Set of 16
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Regular price
$747.06
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.
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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 Drag Race valve springs in a polished double without damper configuration, built for Sportsman and Bracket Classes applications. The outer spring measures 1.640 in. O.D. and the set is rated to .900 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
- Damperless design removes unnecessary damper weight and reduces retainer wear
- Polished finish reduces friction and helps minimize load loss
Fitment
- Recommended use: Sportsman and Bracket Classes
Product Details
- Series: Manley NexTek Drag Race
- Spring Type: Polished double without damper
- Maximum Valve Lift: .900 in.
- Outer Spring O.D.: 1.640 in.
- Inner Spring I.D.: .860 in.
- Installed Pressure: 280 @ 2.100 lbs.
- Open Pressure: 795 @ 1.250 lbs.
- Spring Rate: 604 lbs./in.
- Coil Bind Height: 1.150 in.
- Weight: 160 grams each
- Quantity: Set of 16
- Manufacturer Part Number: 221425P-16
Shipping Height: 3.63
Shipping Length: 15.38
Shipping Width: 3.63