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Please call us to discuss your needs, or download our Bespoke Disc Specification Quotation/Ordering form here.
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ISR Bespoke High-Carbon Stainless Steel Brake Discs

At HPS we not only supply high quality ISR standard sized direct replacement front or rear discs for your bike, but we also offer a bespoke disc manufacturing service for one-offs (or batches of discs) to enable you to put the finishing touches to your bike - whether simply changing to non-standard wheels, or tackling an entire special project bike. Either way, HPS will ensure your ISR discs will simply bolt straight on.

Developed and used for many years at the highest levels of racing, ISR discs are produced from the highest quality high-carbon Swedish steel bar (not inferior rolled sheet) to ensure the greatest resistance to the thermal loading discs experience during use which can lead to warping.

In addition, for use on the highest performance bikes, our top-of-the-range ISR discs are truly "fully floating" to alleviate the disc shrinkage problems semi-floating performance discs can experience - with the option of damping to ensure they operate just as quietly as a semi-floating or a one-piece disc.

ISR Brake Disc Service from HPS
If you need to fit non-standard wheels, forks or swingarm - or match new discs to replacement calipers - we can supply the discs to bring it all together.

Produced from the highest quality High-Carbon Swedish Steel Bar, in 5mm thickness, ISR disc features include:

  • Produced from Warp-resistant High-Carbon Steel Bar (not inferior sheet)
  • Flat or offset/dished centres
  • One-piece or fully rebuildable Two-piece
  • High Performance Fully-floating or Semi-floating for non-sportsbikes
  • 5mm thick for optimal thermal absorption capacity
  • Standard or Narrow-track rotors
  • Dampened option (for fully-floating noise reduction)
  • Drilled or plain/undrilled rotors
  • Optional corrosion-resistant galvanised rotor finish
  • Discs produced to comply with classic racing regulations where applicable

Classic Racer Upgraded Discs
Where racing regulations restrict braking system modifications, we can supply race discs to match your originals' dimensions and general appearance, but using this vastly superior rotor material for improved friction performance and fade resistance over original equipment high-chromium content stainless steel disc to give you winning edge. Please call us to discuss your needs.

Direct replacement standard size fully-floating discs example pricing
Suzuki GSX-R1000 300mm front - from £222.80
Ducati 916-998 320mm front - from £238.00

Direct replacement standard size fully-floating dampened discs example pricing
Suzuki GSX-R1000 300mm front - from £264.00
Ducati 916-998 320mm front - from £284.00

Rear discs from £118.00

Bespoke discs - from prices as above

Special offer - for a limited time HPS is offering dampened fully-floating front pairs for the same price as undampened fully-floating units, saving you up to £84 on a pair of discs. Please ask us for further details.


The Highest Quality Discs
Built to your specification

ISR Offer

Fully Floating - 23A
(standard or narrow-track)

Dampened Fully Floating - 23F
(standard or narrow-track)

Classic Undrilled - 23G
(where regulations allow and for improved performance, can be supplied drilled)

Solid Drilled - 23C
(rear shown, fronts available)

Semi Floating - 23B

Download Form

We're here to help...
Please click the button above to download our form, which will provide more information and please do call us to discuss your needs if you have any questions whatsoever.

Dampened Fully Floating - 23F
narrow-track disc (shown right).


ISR Discs, chosen by the experts

Practical Sportsbikes magazine
chose ISR discs for their Kawasaki GPZ750 project.

Here's what they said...

"For me though, the biggest improvement is the brakes.

Massive bespoke ISR floating discs gripped by Brembo Goldline calipers were always going to be a recipe for eye-popping deceleration and the reality is every bit as good as it looked on paper."

Jim Moore Practical Sportsbikes Magazine
Kawasaki GPZ750


Kawasaki Z900 Project

"The custom ISR discs have arrived and... 1. they fit perfectly - dimensions are spot on, and... 2. they are lovely. Very pleased with the service.

They look really good with the black Ohlins forks and Brembo billet calipers. FYI I used stainless steel Probolt disc bolts, which fitted perfectly. The bolts (which are stainless replicas of the genuine Kawasaki ones) have a shoulder which fitted just so inside the discs. I also like the fact that the fronts don't rattle too much. I had some full floating AP discs on a Fireblade and they were too loose for my taste.

he brakes are a key part of the looks and being able to get custom discs from HPS/ISR was a major plus. Being able to specify a custom offset made all the difference. It meant that I could choose an unrelated collection of parts and end up with a front end that looks cohesive and not a random shambles.

The front end consists of:

  • Billet yokes from Japan for a Kawaskai Z900
  • Ohlins RWU forks
  • Kawasaki ZX9R wheels
  • Brembo billet calipers
  • Sculpture caliper brackets specially designed for the Ohlins forks
  • Custom spindle and spacers

...and the rear was even more complicated! So, without the ISR discs I couldn't have done it. I think the price is very competitive as well. I hope you sell lots of these, it is a great concept."

Kawasaki Z900 Project

Van Veen Kreidler 50cc with ISR custom front disc...

Van Veen Kreidler

ISR Custom Disc for Yamaha TZ350G...

Honda CBR900RR 954 Fireblade...

All offers are subject to availability and HPS terms and conditions of sale. Images are for display purposes only. Prices are in UK Pounds Sterling (£) ; however, they may fluctuate and we therefore reserve the right to amend them without notice. Prices exclude delivery options which can be specified at the customer's request. All motorcycle dealer/manufacturer's trademarks acknowledged. Calls may be recorded for training/security purposes. Site Content Copyright 2010 HPS Ltd. All rights reserved. E.&O.E.