Technical documents
Grand National GN4R Caliper 120-16529 by Wilwood
$802.02
Wilwood Grand National GN4R caliper, part 120-16529
The Wilwood 120-16529 caliper is supplied as a single unit, part number 120-16529. Supplied in one factory finish.
| Caliper specification | |
|---|---|
| Model | Grand National GN4R |
| Pistons | 4 |
| Total piston area | 5.18 sq in |
| Piston material | Thermlock |
| Dust boot | No |
| Mount type | Radial |
| Mount centre | 7.09 in |
| Side | Left Hand |
| Manufacturer | Wilwood |
Rotor clearance
| Rotor compatibility | |
|---|---|
| Nominal rotor width | 1.25 in |
| Rotor width range | 1.19 to 1.25 in |
| Nominal rotor diameter | 14.00 in |
| Rotor diameter range | 12.19 to 14.00 in |
Check your rotor against the width range before ordering. A caliper built for a narrower rotor will not close over a thicker one.
Finishes and part numbers
| Finish | Wilwood part number |
|---|---|
| Anodised | 120-16529 |
Dimensions and technical drawing
Full dimensional drawing for the Grand National GN4R body. Dimensions are given in inches with millimetres in brackets. Click the drawing to open it full size.
Matching brake pads
This caliper accepts 7520 plate pads. We stock the full compound range in that plate: 7520 Plate Racing Brake Pads by Wilwood — available in BP-10, BP-20, BP-30, PolyMatrix and other Wilwood race compounds. See all racing brake pads.
Mounting hardware and plumbing
Calipers ship without mounting bolts, brackets or fluid lines. Browse caliper parts and hardware for bolt kits, bleed screws, seals and rebuild parts, and brake lines and fittings for the -3 AN hoses, banjo bolts and adapters needed to plumb the caliper.
Hand and pairing
This is the left-hand caliper. The matching right-hand caliper is Grand National GN4R Caliper 120-16528 by Wilwood — order both for a complete axle set.
Other calipers in the Grand National GN4R family
Browse the complete range of Wilwood racing calipers.
