H&R ZF030-36-005 36mm I.D. Tender Race Spring 29 lbs/in

The H&R ZF030-36-005 is a 36mm inner diameter tender (helper) race spring engineered for high-performance motorsport suspension systems. Part of H&R's ZF-series tender spring lineup, this spring is designed to work in conjunction with main coilover springs to fine-tune suspension response, increase rebound travel, and maintain consistent contact between the main spring and perch at full droop.

Key Specifications:

• Inner Diameter: 36mm
• Free Length: 1.18 inches (30mm)
• Spring Rate: 29 lbs/inch
• Block Height: 0.47 inches
• Load at Block: 20 lbs
• Weight: 0.06 lbs per spring

Key Features:

• Constructed from trapezoidal (flat-profile) spring wire for a minimal block height and maximum usable travel
• Made from lightweight 54SiCr6 high-strength spring steel for durability under sustained motorsport stress
• Factory pre-blocked to eliminate spring sag and set over time
• Suitable for use as a tender spring to increase rebound travel or to influence the rate response of the chosen main spring
• Compatible with H&R 36mm I.D. coilover and race spring systems

Sold individually. The H&R ZF030-36-005 is an essential tuning component for racers and performance enthusiasts seeking precise, reliable suspension setup with the quality engineering H&R Spezialfedern is known for.