Take a closer look at Gorilla Brakes Factory Racing Stealth pads — designed for quiet braking, smooth modulation, and dependable braking performance.
Compatible with selected Tektro heavy-duty 4-piston e-bike, cargo-bike and trike brake calipers requiring the extra-thick 5mm Q13RS pad format.
Gorilla Brakes Factory Racing Stealth 5mm Pads combine our high-performance Factory Racing friction compound with an acoustic damping layer designed to reduce vibration and unwanted braking noise. Developed for the increased weight and braking demands of e-bikes, cargo bikes and utility cycles, they provide powerful braking, progressive control and consistent performance under load.
These pads use the 5mm Q13RS pad profile. They are thicker than standard Tektro and TRP 4-piston pads, so the brake model and front/rear caliper position must be checked carefully before ordering.
✅ Compatibility Chart
Brake System
Compatible Model
Important Information
Dorado
HD-T737
4-piston 5mm Q13RS caliper
Auriga+
HD-E740, HD-T740
Cargo and e-bike models
Auriga+
HD-E741, HD-T741
Parking-lock variants
Auriga Twin+
HD-E745, HD-T745
Twin-caliper trike and cargo systems
Gemini
HD-M535
4-piston 5mm Q13RS system
Gemini
HD-M530
Front caliper only
Volans
HD-T535
4-piston 5mm Q13RS system
Tektro HD Series
HD-T532
Front caliper only
⚠️ Please note: The rear calipers fitted to the Tektro HD-M530 and HD-T532 use a different 2-piston pad. These 5mm Q13RS-format pads fit the front caliper only on those two brake systems.
Auriga Twin+ owners: This product contains enough pads for one caliper. A twin-caliper system normally requires two pairs for a complete pad replacement.
🔥 Compound Type: Factory Racing Stealth
The Factory Racing Stealth Compound is designed to deliver strong, predictable braking while minimising noise and vibration. Its multi-layer construction combines a high-performance friction material with acoustic damping, making it particularly well suited to heavier e-bikes, cargo bikes and utility cycles.
Feature
Performance Benefit
Stealth acoustic damping layer
Helps reduce braking noise and vibration
Factory Racing friction compound
Powerful braking with progressive modulation
Heat-resistant construction
Consistent performance during repeated braking
5mm heavy-duty pad format
Designed for compatible cargo and e-bike calipers
Q13RS-format precision fit
Correct profile for the listed 4-piston Tektro systems
📏 Pad Specification
Pad format
Q13RS-compatible
Overall thickness
5mm
Caliper type
Compatible Tektro 4-piston calipers
Compound
Factory Racing Stealth
Application
E-bike, cargo bike, trike and heavy-duty utility use
📦 What’s Included
1 × Pair of 5mm brake pads
1 × Spring clip
Eco-friendly recyclable packaging
🌍 Ideal For
Heavy-duty electric bikes and speed pedelecs
Cargo bikes carrying additional weight
Electric trikes using Tektro Auriga Twin+ brakes
Utility and delivery bikes exposed to frequent braking
Riders seeking powerful braking with reduced noise and vibration
🔍 Check Before Ordering
Confirm that your caliper model appears in the compatibility chart above
Check that your original brake pads use the 5mm Q13RS profile
For HD-M530 and HD-T532 systems, order these pads for the front caliper only
Do not order these pads for standard-thickness TRP calipers such as DH-R EVO, Trail EVO, Slate, Quadiem or Spyre
Gorilla Brakes is trusted by riders worldwide, with over 13,000 verified positive feedback ratings.
We also work closely with race teams and sponsored riders to validate performance in real-world conditions.
These Factory Racing Stealth pads fit Tektro 4-piston calipers that use the 5mm Q13RS pad format. Compatible models include Dorado HD-T737; Auriga+ HD-E740, HD-T740, HD-E741 and HD-T741; Auriga Twin+ HD-E745 and HD-T745; Gemini HD-M535; Volans HD-T535; and the front calipers of HD-M530 and HD-T532 systems.
No. These 5mm Q13RS-format pads fit the front caliper only on Tektro HD-M530 and HD-T532 brake systems. Their rear calipers use a different 2-piston pad.
Each pack contains one pair of brake pads for one 4-piston caliper. Tektro Auriga Twin+ HD-E745 and HD-T745 systems use two calipers, so a complete twin-caliper replacement normally requires two packs.
Gorilla Brakes Factory Racing Stealth combines a high-performance friction compound with an acoustic damping layer. It is designed to deliver powerful, progressive braking while helping reduce noise and vibration on e-bikes, cargo bikes, trikes and utility cycles.
o. These pads are specifically designed for compatible Tektro 5mm Q13RS 4-piston calipers. TRP Quadiem, DH-R EVO, Trail EVO, Slate and Spyre brakes use different pad shapes or standard-thickness pads.
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Great brake pads. They wear quite fast but the braking power is excellent - that’s the trade off I guess.
Thanks for the feedback. SRAM Maven brakes do tend to wear through brake pads much faster than many other braking systems.
A full sintered compound can last longer, but Maven brakes can be very sensitive to harder metallic pads and may produce significant vibration resonance and that familiar loud squeal. As you said, our Factory Racing compound is a great compromise, offering excellent braking power, good modulation and much better noise control, although the trade-off is slightly faster wear.
Awesome stopping power, a noticeable improvement over standard.
Hi Mark, we're thrilled to hear you're enjoying the improved stopping power! Thanks for sharing your experience with the Shimano MT Series pads. Ride safe!
