StopTech Drilled Sport Brake Rotor

StopTech Drilled Sport Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers that look great behind your wheels – and offer significantly improved braking performance. The unique cross-drilling aids with heat and brake dust dispersal; prevents glazing of the pads; adds bite and improves wet and dry braking performance. Built to last; the black e-coating provides protection from corrosion and the high carbon metallurgy (in most applications) offers quieter operation; better crack resistance and increased performance.

Additional Information

Premium rotor with advanced metallurgy that greatly reduces pad squeal. Especially effective with higher friction; European style brake pad compounds. Slotted for increased bite; improved looks and better performance

Application Summary

2008 - 2014 Subaru Impreza, 2013 - 2017 Subaru WRX STI

Product Overview

StopTech recognizes that great brakes need to look as good as they perform. Performance wheels and tires are best complemented with StopTech SportStop Cross-Drilled rotors.

SportStop Drilled brake rotors prevent glazing of the pads, add bite and improve wet and dry braking performance.

Every SportStop Drilled brake rotor is produced from a high quality Centric Parts blank casting and finished in a durable e-coating for corrosion resistance.

SportStop Drilled rotors look great behind custom wheels, improve the initial bite of the brake pads, and help wipe away the debris that forms between the pad and the disc. A set of SportStop cross-drilled rear replacement rotors is a great way to match the aesthetics of a StopTech Big Brake Kit with the cross-drilled rotor option.

*E-Coated Finish*
Every SportStop rotor is finished with black e-coating on both sides of the hat, inside the the cooling vanes, and on the outside edge. E-coating is a superior electro-statically applied finish designed to withstand 400 hours of salt water exposure without rusting. This is especially important on both mounting faces of the hat where it touches the hub flange and back face of the wheel. Any accumulation of rust in these area can lead to installed lateral run out issues.

*Power Alloy Metallurgy*
Power Alloy metallurgy is exclusive feature of SportStop rotors. In specific vehicle applications, StopTech works with foundry partners to increase the molybdenum or carbon content of the castings, and to carefully control the cooling rate during production to reach targets for hardness and tensile strength.

*Cooling Vane Design*
Nearly all SportStop cross-drilled rotors have unique drilled hole patterns for the left and right sides of the vehicle. For these directional patterns, straight vane or pillar vane rotors are used to ensure that a drilled hole never touches a cooling vane.

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	sto939.47511	Street Axle Pack Drilled, Rear (1x sto128.47030L, 1x sto128.47030R, 1x sto308.09610)
	sto936.47021	Street Axle Pack, Drilled, 4 Wheel (1x sto128.47022L, 1x sto128.47022R, 1x sto128.47030L, 1x sto128.47030R, 1x sto308.09610, 1x sto308.10010)
	sto979.47009	Sport Axle Pack Drilled Rotor, 4 Wheel (1x sto309.09610, 1x sto128.47022L, 1x sto128.47022R, 1x sto128.47030L, 1x sto128.47030R, 1x sto950.47006, 1x sto950.47508, 1x sto309.10010)
	sto979.47023	Sport Axle Pack Drilled Rotor, 4 Wheel (1x sto309.09610, 1x sto128.47022L, 1x sto128.47022R, 1x sto128.47030L, 1x sto128.47030R, 1x sto950.47006, 1x sto950.47507, 1x sto309.10010)
	sto979.47009R	Sport Axle Pack Drilled Rotor, Rear (1x sto309.09610, 1x sto128.47030L, 1x sto128.47030R, 1x sto950.47508)
	sto979.47023R	Sport Axle Pack Drilled Rotor, Rear (1x sto309.09610, 1x sto128.47030L, 1x sto128.47030R, 1x sto950.47507)

• Black E-Coated Non-Friction - Corrosion Protection
• Direct OE Replacement
• Directional Curve Vane Designs On Selected Apps
• Double Disk Ground For Consistent Friction Surface
• Drilled/Slotted Helps Evacuate Gasses/Dust/Heat
• Increased Initial bite and Wet Weather Response
• Power Alloy Is Descendant Of Patented AeroRotor
• Superior Resistance To Cracks From Thermal Stress

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Technical Bulletin

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Brake Rotor, Iron, Black E-Coat, Cross Drilled, Driver Side Rear, Subaru, Each

StopTech drilled rotors offer awesome control, responsive pedal feel, and supreme durability, plus a great look behind your open wheels! These quality replacements fit like your stock rotors, but they're cast from a unique power alloy—chromium and iron—and are mill-balanced to resist thermal stress and vibration noise. Then, they're CNC-machined and drilled to improve heat and gas dissipation and maximize your stopping power. Most have a durable black E-coating applied to the non-friction areas of the rotors to prevent unsightly corrosion for a lasting, sporty appeal. Don't put up with poor factory rotors; you'll run cooler with improved braking performance and an enhanced appearance with StopTech drilled brake rotors.