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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
48-Vane GT Curved Vane Rotor
Wilwood’s Spec-37 GT 48 Curved Vane Rotors are manufactured from a proprietary iron alloy, developed to withstand extreme temperatures with the highest possible resistance to distortion, warping, cracking, and wear. The formulation for this alloy is derived from technology and materials that were critical in the development of Wilwood’s high-performance military spec rotors. Combined with our proven GT series asymmetrical slot pattern and individual dynamic balancing, smooth, vibration-free performance is assured at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking on short track and road course circuits.
Performance Features
High quality Spec-37 thick wall castings
Suitable for high temperature competition and street use.
Rotor Dimensions
Width (in)
1.00
Diameter (in)
13.00
Mounting Side
Right
Rotor Design
Material
Spec-37 Iron
Vane Count
48 CV
Weight (lbs)
11.82
Rotor Style & Finish
Type
GT
Style
GT Slotted
Surface Finish
Plain
Rotor Enhancements
Polished
No
Balanced
Yes
Additional Rotor Dimensions
Rotor Bolt Circle (in)
12 x 8.80L
Rotor Mounting Hole Size (in)
Lug
Hat Side Inside Diameter (in)
8.12
Opposite Side Inside Diameter (in)
9.46










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
01
We test before we recommend.
02
We help you choose the right part.
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Only trusted manufacturers.
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Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.