Function and Form Coilover Parts: From Top to Bottom

At Function and Form Suspension, we engineer coilovers to be durable, serviceable, and easy to maintain. While we do not offer full rebuild services, every one of our Function and Form coilover parts is available individually — meaning anyone with basic tools can replace worn components without sending their kit out for repair.

Here’s a complete breakdown of the Function and Form coilover parts, starting from the top of the assembly and working our way down.

 

1. Damper Knob

Adjusts suspension stiffness or softness by controlling the damper’s internal valving.  (Link to Top Damper Knob)

 

2. Top Hat Nut

Secures the top hat to the damper shaft, ensuring the assembly remains tight and stable. (Link to Top Hat Nut)

 

3. Top Hat Washer

Distributes pressure evenly under the top hat nut to prevent damage and maintain smooth operation. (Link to Top Hat Washer)

 

4. Top Hat Bushing

A rubber or polyurethane piece that cushions the top hat connection and reduces vibration. (Link to Top Hat Bushing)

 

5. Top Hat

The upper mounting plate connecting the coilover to the chassis and supporting the spring and damper. (Link to Top Hat)

 

6. Dust Boot

Protects the damper shaft from dirt, debris, and moisture to extend seal life. (Link to Dust Boot)

 

7. Spring

Supports the vehicle’s weight, absorbs road impacts, and works with the damper for handling performance. (Link to Springs)

 

8. Shoulder Bushing

Positions the spring securely to prevent unwanted movement under load. (Link to Bushing)

 

9. Bump Stop

Prevents the suspension from bottoming out and damaging the damper at full compression. (Link to Bump Stop)

 

10. Damper

Controls suspension movement during compression and rebound for stability and comfort. (Link to Damper)

 

11. Spring Perch Washer

Allows smooth rotation of the spring during adjustments while preventing binding. (Link to Spring Perch Washers)

 

12. Spring Perch

An adjustable collar for setting ride height and spring preload. (Link to Spring Perch)

 

13. Spring Perch Locking Collar

Locks the spring perch in place so height and preload settings remain consistent. (Link to Spring Perch Locking Collar)

 

14. Lower Mount Locking Collar

Secures the lower mount position to keep ride height fixed. (Link to Lower Mount Locking Collar)

 

15. Lower Mount

Bolts the coilover to the suspension arm or hub assembly, transferring loads to the chassis. (Link to Lower Mount)

 

Easy Maintenance, Long-Lasting Performance
Every part listed above is available directly from Function and Form. Replacing worn parts is straightforward, requires only basic hand tools, and can restore your suspension’s performance without replacing the whole coilover kit. With proper care and occasional part swaps, your Function and Form coilover parts can keep your ride performing at its best for years to come.

 

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