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Harwood Performance Source
We’re continually adding motorcycle parts and accessories to our store, but if you can’t find the items you need here - or if you would prefer to order by phone - please call anytime and we’ll be very pleased to help. Thanks!

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ISR RADIAL FRONT BRAKE MASTER CYLINDER (REMOTE RESERVOIR) WITH ADJUSTABLE RATIO & LEVER SPANISR RADIAL FRONT BRAKE MASTER CYLINDER (REMOTE RESERVOIR) WITH ADJUSTABLE RATIO & LEVER SPAN(Reference #41906)

These radial master cylinders from ISR really are a work of art! Machined from billet aluminium and incorporating many unique design features, these work as good as they look.

The adjustable lever ratio means that you can tailor the feel of your front brakes exactly to suit your preference. The ingenious design means that these can be used as either a front brake or clutch master cylinder – simply un-bolt the lever assembly and spin round to suit - and in a race crash damage situation this can also mean that the lever assembly can often be replaced without disconnecting the brake line or bleeding the cylinder.

- Adjustable leverage ratio
- Span/reach adjustable lever with comfortable profile
- Integral nipple for rapid bleeding after assembly/servicing
- Clear anodised, corrosion resistant finish
- Can be configured as a brake or clutch master cylinder
- Uses same lever as Cable Clutch
- Ready to connect to your bike’s standard/original remote fluid reservoir (except Brembo O.E.M. as used on Aprilia & Ducati)

Can be supplied with optional single or double brake line banjo bolt and washers - with integral hydraulic brake light switch for road/street bikes (please select below).

Please also select your required bore size:
- 15.87 mm for bikes with twin 4 piston radial front calipers, or a single 4 piston front caliper
- 17.50 mm for bikes with twin 6 piston caliper, or older-style non-radial 4 piston front calipers


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Price:  £288.00 Including VAT at 17.5%


Please select Bore Size:


Add Single Banjo Bolt - with Brake Light Switch £16.87 inc. VAT  
Add Double Banjo Bolt - with Brake Light Switch £16.87 inc. VAT  
Add Single Banjo Bolt - without Brake Light Switch £3.38 inc. VAT  
Add Double Banjo Bolt - without Brake Light Switch £3.74 inc. VAT  


ISR UNIVERSAL CABLE CLUTCH LEVER & ASSEMBLY (ADJUSTABLE LEVER SPAN) ISR UNIVERSAL CABLE CLUTCH LEVER & ASSEMBLY (ADJUSTABLE LEVER SPAN) (Reference #41907)

For those who fit an ISR Brake Master Cylinder and want a matching cable clutch lever unit or for those who simply need to adjust the span of their cable clutch lever - this is THE product.

- Takes standard 3.5mm clutch cables
- Adjustable lever reach
- Clear anodised, corrosion resistant finish
- 275g - complete
- Matches ISR hydraulic master cylinders and uses same levers

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Price:  £116.48 Including VAT at 17.5%



ISR REMOTE RACING REAR MASTER CYLINDER (14MM) ISR REMOTE RACING REAR MASTER CYLINDER (14MM) (Reference #46309)

Weighing in at only 420 Grammes and machined from billet aluminium, this master cylinder is suitable for both road and racing bikes.

The 14mm bore suits the twin piston fixed or large single piston floating rear calipers found on virtually all motorcycles.

Its neat sealed remote reservoir is designed to be easily replaced if damaged in a crash - it also looks trick as well!

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Price:  £130.65 Including VAT at 17.5%



ISR 22MM BILLET SWITCH ASSEMBLY 1 SLIDE/1 PUSH BUTTON (LEFT OR RIGHT FITMENT) ISR 22MM BILLET SWITCH ASSEMBLY 1 SLIDE/1 PUSH BUTTON (LEFT OR RIGHT FITMENT) (Reference #45781)

ISR have created a number of handlebar clamp switch assemblies. These fit any of the ISR master cylinder or clutch levers and can be wired to your custom functions.

Also available:
1 slide and 2 push buttons (left and right hand) OR 2 push buttons only - call for details.

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Price:  £60.00 Including VAT at 17.5%


Braking:Brake Master Cylinders:ISR Front Brake & Clutch Master Cylinders


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All products are subject to availability. Images are for display purposes only, actual product images may vary slightly. Prices are in UK Pounds Sterling (£) and exclude delivery options which can be specified at the customer's request. Manufacturers' specifications and HPS prices are correct at time of publishing; however, they may fluctuate and we therefore reserve the right to amend them without notice. All manufacturer's trademarks acknowledged. Site Content Copyright © 2010 HPS Ltd. Calls may be recorded for training/security purposes. All rights reserved. E.&O.E.