XRAY 368277 Rear Progressive Springs 55mm 2 Dots Soft-to-Firm  [XR-368277]

Improve NT1 Rear End Grip with XRAY 368277

The XRAY 368277 rear spring set brings a controlled balance of compliance and response to NT1 series chassis. With a progressive coil profile these springs give initial softness for traction and ramp up stiffness as load increases, helping the car stick through mid-corner transitions.

How the Progressive Rate Changes Handling

These 55mm springs feature an open end and a progressive winding that behaves softer at small displacements and stiffens as the chassis compresses. That progressive action helps with corner entry traction while still allowing higher cornering speed once the car is loaded.

Matched Pairs for Reliable Setup Choices

Each spring is hand measured and matched to ensure consistent lengths and damping behavior across the set. Laser-engraved stripes identify firmness quickly so you can swap springs and dial setup changes without guesswork.