Wilwood Caliper-GM III - D52, 2.38" Piston, 1.25" Disc
Wilwood Caliper-GM III - D52, 2.38" Piston, 1.25" Disc
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In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
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Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
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For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
Specifications
Product details shared across all variants.
- Product type
- Disc Brake Caliper Piston
- Category
- Brake Calipers
- Item condition
- New
- Manufacturer type
- Aftermarket
- Shipping dimensions (L × W × H)
- Shipping weight
- 3.7 lb
- Barcode
- 889545004090
Billable shipping weight; may include dimensional weight.
GM III Single Piston Floater
Wilwood's GMIII caliper represents the latest refinements in caliper design and manufacturing through solid modeling and stress simulation programs. The result is the most rigid, highest torque, lightweight aluminum caliper with weights starting at 3.36 pounds. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers
The real strength comes from its exclusive triple bridge configuration which provides a tremendous increase in clamping force over other twin bridge calipers. Efficient designs further maximize weight savings: material is properly placed to fortify all load bearing points. Each caliper model has its own unique casting: 2.38" diameter piston calipers incorporate a smaller external contour than the larger 2.75" diameter piston calipers. Any material that did not contribute to strength, was eliminated for weight reduction.
The GMIII?incorporates standard Wilwood features like stainless steel pistons for increased fluid protection and high temperature seals for controlled retraction which provides improved driver feel. The GM III for 1.00" width rotor is machined and fitted with OEM type slide pin vibration dampeners for a direct OEM caliper interchange.
Specification
| Pistons | |
|---|---|
| Piston Count: | 1 |
| Piston Area (in²): | 4.45 |
| Piston Type: | Stainless |
| Dust Boot: | No |
| Rotor Dimensions | |
| Rotor Width(in): | 1.25 |
| Rotor Diameter(in): | 11.75 |
| Pad Dimensions | |
| Pad Area (in²): | 10 |
| Pad Volume (in³): | 3.9 |
| Duty Rating & Material | |
| Material: | Aluminum |
| Weight(Lbs): | 3.7 |
| Colors & Finish | |
| Color: | Clear |
| Finish: | Clear Anodize |
| Mounting | |
|---|---|
| Mount Center(in): | 7.06 |
| Mount Side: | Universal |
| Mount Type: | Floating |
| Rotor Compatibility | |
|---|---|
| Rotor Width(in): | 1.25 |
| Maximum Rotor Width(in): | 1.25 |
| Minimum Rotor Width(in): | 1.19 |
| Maximum Rotor Diameter(in): | 11.75 |
| Minimum Rotor Diameter(in): | 11 |
| Brake Pad Specifications | |
|---|---|
| Brake Pad Type 1: | D52 |
| Brake Pad Type 2: | N-A |
| Brake Pad Type 3: | N-A |
| Total Pad Area (in²): | 10 |
| Total Pad Volume (in³): | 3.9 |
| Piston Specifications | |
|---|---|
| Piston 1 Bore(in): | 2.38 |
| Total Piston Area (in²): | 4.45 |
| Mounting Specifications | |
|---|---|
| Mount Type: | Floating |
| Mount Side: | Universal |
| Mount Center(in): | 7.06 |
| Mount Hole Size(in): | 0.69 |
| Mount Height(in): | 0.77 |
| Inlet Thread Size: | 1/8-27 NPT |
