WHEEL CYLINDER REAR 9/16" BORE SIZE ERA
GWC1131

(¥13) £12.50 exc vat

(¥15) £15.00 inc vat

In stockIn stock
9/16"(0.565") bore rear wheel cylinder used from 1959-1967. This can be used for a replacement for GWC1134 also. The only difference is a locating dowel in the back of the cylinder which can easily be removed or the backplate drilled to relocate the pin. repair kit is GRK2003

Quantity one per rear wheel and 2 required for car set.

Not handed.

(¥13) £12.50 exc vat

(¥15) £15.00 inc vat

In stockIn stock

Recommended usage 2 x GWC1131 to fit one mini.
Rear Brakes Single Line & Tandem - Qty 2
Brake Hydraulics Identification Chart - Qty 1

Recommended products

Paper gasket fitted between the rear wheel cylinder and the backplate. Once supplied with genuine wheel cylinders AP now seem to have discontinued this practice.

If your wheel cylinder does not bolt on it uses this special clip. Some new wheel cylinders come with this clip included so check on ordering.

People also bought products

Rubber gaiter to keep debris from entering the drum via the backplate handbrake lever SMN10005. Sold singly per backplate, 2 required per car.

Genuine AP Lockheed rubber boot

Die cast alloy brake drums with built in spacer-imported copy but have proven 100% reliable on sales from 1998 without any problems. The alloy material has a finned design that dissipates heat quicker which in turn helps reduce brake fade. While desi...

All MK3 minis to 1978 except Cooper S MK3 which used 21A1774.

Fitted mainly to cars with 3/4" larger bore rear wheel cylinders.

The correct regulator valve for all MK1/2 mini plus all Cooper S inc MK3 is 21A1774 where m...

Genuine AP brand new rear Left Hand back plate assembly (beware of copies).

These are ready to bolt on, brand new stock from AP Automotive and have the .75" bore genuine wheel cylinders GWC1102. Remember that all wheel cylinder ...

Genuine AP brand new rear right hand back plate kit (beware of copies).

These are ready to bolt on brand new stock from AP Automotive and have the .75" bore genuine wheel cylinders GWC1102. Remember that all wheel cylinder rubb...

Adjustable original brake proportioning/balancing valve for racers only.

The most common brake system on the Mini has Disc brakes in the front and drums in the rear. The weight bias on the car is all in the front and thus under hard braking...

Easy bend copper brake pipe 26" long with one female and one male end - used on hydrolastic cars from regulator valve to near side rear hose. These pipes are retail less 35% discount at least to keep prices viable.

A special 3/8" unf half nut (9/16"AF spanner size)for fitting on rear brake hoses and carbs to manifold.

If your rear brake drums have 1" built in spacers such as all Cooper S and any post 1984 minis, these are the longer drum retaining screws, 2 required per drum and sold individually.

Easy bend copper 24"long brake pipe with one female and one male end for the regulator on the rear subframe to the n/s/r hose on hydrolastic cars only.

Also used on split front to rear system with valve in engine compartment - from 3 way uni...

The screw that holds the drum on the hub. Earlier hubs had two screws, many replacements have only one, all that’s needed.

originally fitted to the 1275GT 1976/7 single line system plus NON UK 850/998 diagonal split systems for the same years --half inch bore size it was the smallest cylinder ever used--repair kit was BHM7015 which is now very scarce.Uses [l...

Mintex brake shoes for the rear of all minis which are 1.25" wide. Also fitted to front on early single leading shoe cars (dry suspension pre 1964) with a single wheel cylinder. Manufactured by Mintex and sold as a box set of 4 brake shoes for one re...

The front and rear brake drums on a standard Mini are the same. This one uses 1 1/4" shoes (GBS834AF) on the rear and single-leading front and 1 1/2" shoes (GBS733AF) on twin-leading front only. Sold singly.

This is...

Bleed nipple for all rear wheel cylinders plus GWC101 and is 1/4"unf thread.

current wheel cylinders are using 7mm rather than 6.2mm(1/4")spanner size but same thread.See ADJ45 spanner for this size bleed nipple

Rubber gaiter to keep debris from entering the drum via the backplate handbrake lever SMN10005. Sold singly per backplate, 2 required per car.

Genuine AP as supplied by Rover. Left Hand rear backplates are the only type available now for the Mini and have an extra hole, as per the Mini Metros, and take the same plug AEU1541A which is not supplied. If you have GWC1101

Genuine AP,One of the two return springs, per wheel, for Mini single-leading front drum brakes 1959-64 and all lower Mini rears. This is the spring with the coils near each end.

A good mechanic will replace the pull-off springs ([link]17H762...

Brake adjuster pin for all mini rear drum brakes plus single wheel cylinder front drum brakes. It is more economical to purchase 17H7620 kit which includes one adjuster pin and two tappets.

All MK1/ MK2 Minis including all Cooper and "S" versions plus MK3"S" only.

This valve was fitted to every MK1/2 car including Cooper and "S" and the MK3 Cooper "S" only.

All other MK3 versions 850/998/1100 use 21A2031 w...