Grand National GN6R Caliper 120-13947 by Wilwood

Wilwood Grand National GN6R caliper, part 120-13947

The Wilwood 120-13947 caliper is supplied as a single unit, part number 120-13947. Supplied in one factory finish.

Rotor clearance

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

Dimensions and technical drawing

Full dimensional drawing for the Grand National GN6R 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 GN6R Caliper 120-13946 by Wilwood — order both for a complete axle set.

Other calipers in the Grand National GN6R family

120-13946 · 120-13948 · 120-13949

Browse the complete range of Wilwood racing calipers.