Good quality and only place I could find pack of 4 rather than them.coming in 2's at double the price 😆
Great so far! Stop exceptional and low noise.
Gorilla Brakes NRS replacement disc brake pads for Hope E4 calipers, including Tech 3 E4 and Tech 4 E4. Match the HBSP323 shape with a 37 mm reference width before ordering.
Match your existing pad shape and exact caliper model before ordering. The performance information describes the NRS ONE friction compound.
At a glance
Specifications
- Compound
- NRS ONE
- Backing plate
- Stainless steel
- Pad shape
- Hope E4 — HBSP323 (37 mm reference width)
- Riding
- XC, light trail and everyday riding for lighter riders
- Pack contents
- 2 friction pads with an integrated spring
- Coverage
- 1 compatible brake caliper
The two friction pads and spring form one NRS ONE assembly for one compatible caliper. The spring is integrated, not a separate loose component.
Check before ordering
Compatibility
For Hope E4 four-piston calipers, including Tech 3 E4, Tech 4 E4 and earlier E4 versions using HBSP323 with a 37 mm reference width. Check the E4 marking and complete pad outline; the Tech name on the lever and width alone do not establish fitment. Not for original RX4-SR, which uses HBSP359 with a 31 mm reference width.
| Brake family | Compatible calipers |
|---|---|
| Hope E4 | Tech 3 E4 and Tech 4 E4 calipers using HBSP323 |
- Caliper / pad references
- HBSP323, R.11
Riding recommendation
Gorilla Brakes recommends NRS ONE for lighter riders and light use. It does not recommend this soft organic compound for e-bikes, enduro, downhill or heavier riders. For e-bike riding, Gorilla Brakes recommends the Enduro Pro and Factory Racing brake pad ranges. Match the pad shape and complete brake setup to your bike and its total load.
Rotor compatibility
This compound is suitable for all bicycle disc brake rotor types, including rotors marked “resin pads only”.
Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check rotor condition and minimum permitted thickness before fitting new pads.
Compound performance
NRS ONE
A soft organic compound for lighter riders, XC, light trail and everyday riding, with smooth, predictable braking control.
Braking feel, noise and wear depend on your brake setup, rotor, installation and riding conditions. Follow the brake manufacturer’s fitting and bedding-in instructions.
Heat management
Aluminium or steel backing plates?
NRS ONE combines stainless-steel backing with an integrated spring in a one-piece assembly. The compound guidance describes the soft organic friction material.
Fitting and bedding in
Follow the installation guide for your braking system, then complete the recommended bedding-in procedure before normal riding.
Gorilla Brakes NRS replacement disc brake pads for Hope E4 calipers, including Tech 3 E4 and Tech 4 E4. Match the HBSP323 shape with a 37 mm reference width before ordering.
Match your existing pad shape and exact caliper model before ordering. The performance information describes the NRS ONE friction compound.
At a glance
Specifications
- Compound
- NRS ONE
- Backing plate
- Stainless steel
- Pad shape
- Hope E4 — HBSP323 (37 mm reference width)
- Riding
- XC, light trail and everyday riding for lighter riders
- Pack contents
- 2 friction pads with an integrated spring
- Coverage
- 1 compatible brake caliper
The two friction pads and spring form one NRS ONE assembly for one compatible caliper. The spring is integrated, not a separate loose component.
Check before ordering
Compatibility
For Hope E4 four-piston calipers, including Tech 3 E4, Tech 4 E4 and earlier E4 versions using HBSP323 with a 37 mm reference width. Check the E4 marking and complete pad outline; the Tech name on the lever and width alone do not establish fitment. Not for original RX4-SR, which uses HBSP359 with a 31 mm reference width.
| Brake family | Compatible calipers |
|---|---|
| Hope E4 | Tech 3 E4 and Tech 4 E4 calipers using HBSP323 |
- Caliper / pad references
- HBSP323, R.11
Riding recommendation
Gorilla Brakes recommends NRS ONE for lighter riders and light use. It does not recommend this soft organic compound for e-bikes, enduro, downhill or heavier riders. For e-bike riding, Gorilla Brakes recommends the Enduro Pro and Factory Racing brake pad ranges. Match the pad shape and complete brake setup to your bike and its total load.
Rotor compatibility
This compound is suitable for all bicycle disc brake rotor types, including rotors marked “resin pads only”.
Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check rotor condition and minimum permitted thickness before fitting new pads.
Compound performance
NRS ONE
A soft organic compound for lighter riders, XC, light trail and everyday riding, with smooth, predictable braking control.
Braking feel, noise and wear depend on your brake setup, rotor, installation and riding conditions. Follow the brake manufacturer’s fitting and bedding-in instructions.
Heat management
Aluminium or steel backing plates?
NRS ONE combines stainless-steel backing with an integrated spring in a one-piece assembly. The compound guidance describes the soft organic friction material.
Fitting and bedding in
Follow the installation guide for your braking system, then complete the recommended bedding-in procedure before normal riding.
Compound information is unavailable for this selection. Please select an available compound or contact us for help.
Gorilla Brakes NRS replacement disc brake pads for Hope E4 calipers, including Tech 3 E4 and Tech 4 E4. Match the HBSP323 shape with a 37 mm reference width before ordering.
Match your existing pad shape and exact caliper model before ordering. The performance information describes the NRS ONE friction compound.
At a glance
Specifications
- Backing plate
- Stainless steel
- Pad shape
- Hope E4 — HBSP323 (37 mm reference width)
- Riding
- XC, light trail and everyday riding for lighter riders
- Pack contents
- 2 friction pads with an integrated spring
- Coverage
- 1 compatible brake caliper
The two friction pads and spring form one NRS ONE assembly for one compatible caliper. The spring is integrated, not a separate loose component.
Check before ordering
Compatibility
For Hope E4 four-piston calipers, including Tech 3 E4, Tech 4 E4 and earlier E4 versions using HBSP323 with a 37 mm reference width. Check the E4 marking and complete pad outline; the Tech name on the lever and width alone do not establish fitment. Not for original RX4-SR, which uses HBSP359 with a 31 mm reference width.
| Brake family | Compatible calipers |
|---|---|
| Hope E4 | Tech 3 E4 and Tech 4 E4 calipers using HBSP323 |
- Caliper / pad references
- HBSP323, R.11
Riding recommendation
Gorilla Brakes recommends NRS ONE for lighter riders and light use. It does not recommend this soft organic compound for e-bikes, enduro, downhill or heavier riders. For e-bike riding, Gorilla Brakes recommends the Enduro Pro and Factory Racing brake pad ranges. Match the pad shape and complete brake setup to your bike and its total load.
Rotor compatibility
Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check rotor condition and minimum permitted thickness before fitting new pads.
Heat management
Aluminium or steel backing plates?
NRS ONE combines stainless-steel backing with an integrated spring in a one-piece assembly. The compound guidance describes the soft organic friction material.
Fitting and bedding in
Follow the installation guide for your braking system, then complete the recommended bedding-in procedure before normal riding.
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Help & fitting
Get your brakes ready
Check your fitment, prepare your brakes and find support.
Your questions
About these brake pads
Fitment, materials and performance explained.
Do these pads fit Tech 3 E4 and Tech 4 E4?
Yes, when the caliper is Hope E4 and uses the HBSP323 pad shape with a 37 mm reference width. Check the caliper marking and complete pad outline. The Tech 3 or Tech 4 lever name alone does not identify the pad shape.
Is this the smaller original RX4-SR pad?
No. This is the larger HBSP323 shape with a 37 mm reference width. Original RX4-SR uses HBSP359 with a 31 mm reference width. Match the complete pad shape and exact caliper version.
What is different about NRS ONE’s construction?
NRS ONE combines the stainless steel backing and spring in an integrated assembly with two friction pads. This makes the pads easier to handle during fitting. Use the correct model for your caliper and follow the brake manufacturer’s installation instructions.
Which rotors can I use with this compound?
This compound is suitable for all bicycle disc brake rotor types, including rotors marked “resin pads only”. Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check rotor condition and minimum permitted thickness before fitting new pads.
How should I fit and bed in NRS ONE pads?
Use the NRS ONE model specified for your caliper and follow the brake manufacturer’s installation and bedding-in instructions. Check that the pads and retaining hardware are correctly seated before riding.
Is NRS ONE recommended for e-bikes or demanding riding?
Gorilla Brakes recommends NRS ONE for lighter riders and light use. It does not recommend this soft organic compound for e-bikes, enduro, downhill or heavier riders. For e-bike riding, Gorilla Brakes recommends the Enduro Pro and Factory Racing brake pad ranges. Match the pad shape and complete brake setup to your bike and its total load.
What comes in one pack?
One pack contains two friction pads for one caliper, with the stainless steel backing and spring integrated into the NRS ONE assembly. A separate loose pad spring is not supplied. Order two packs for front and rear only when both calipers use this exact pad fitment.
Can I return used NRS ONE backplates for recycling?
Yes. Gorilla Brakes offers £10 credit on your next order when used NRS backplates are returned through its recycling programme. A free return label is available on request. Credit is processed after the return is received; the programme’s conditions apply.