Motorcyle Brake Calipers

20 May 2015 | Author: | Comments Off on Motorcyle Brake Calipers
Aprilia AF1 125 Replica

Brake Calipers

ISR 6 Piston Monoblock 108mm Mount-Universal Radial Front Brake Caliper -Single– Including Pads Ref: ISRRAD

Precision machined from a solid billet of aluminium alloy – these ultra-light and beautiful calipers are THE must-have upgrade for all front radial brake equipped bikes-

These are the first and still the best aftermarket 6 piston monoblock radial calipers for the standard 108mm radial mounting arrangement – for all current Japanese sports bikes – meaning your investment is protected because you would normally be able to simply switch them to your next bike in the future-

And- at only 718g inc- pads per caliper- you can save a massive 0-6Kg unsprung weight from your front suspension when compared with Brembo’s M4 monobloc caliper – which are still only a conventional four-piston design-

Weight saving where it really counts – unsprung and pivoting round the headstock. Not cheap but you can go some way to justifying your investment when you realise that because they have the standard Japanese radial calliper 108mm mounting spacing they’ll happily transfer to the bike you buy after the one you have now.

With six individual pads per calliper they have the best possible pad area and get around the flex and clamping problems that single pads can suffer from.

Calipers are aluminium as are the pistons, the latter being Tufram coated. SBS Carbon Matrix pads are included. Pad track is 27mm and they work with discs of 280-320mm.

Weight of each calliper including pad is 718g. A standard R1 four-piston is 1Kg with pads.

Performance Bikes Magazine

Size-for-size – due to their six individual pads design – they have a larger piston to pad ratio than a four piston caliper to deliver an unmatched braking power to weight ratio combined with more controllable braking due to their excellent lever feel-


Ultra-light (0.6Kg per pair lighter than Brembo M4 monobloc 4-piston and lighter still compared with standard/OE two-piece units)

Most common universal 108mm radial fork bottom bolt mount pitch

Durable clear anodised finish

Tufram coated aluminium alloy pistons

Six individual pads (included) for more precise braking feel and better modulation

Aprilia AF1 125 Replica

Very quick and easy to bleed

Mounting bolts and spacers can be supplied separately if required

Key Dimensions/Technical Data

Weight per caliper – excluding pads- 538g- including pads- 718g

Pad area- 20-9cm-

Pad track- 27mm -for standard or narrow track discs-

Brake Disc diameter compatibility- 280-320mm

10mm mounting bolts hole length- 33mm -with 14mm dia- x 3mm depth button recesses-

Hydraulic Threads M10 x 1-25mm -10mm depth-

Aprilia AF1 125 Replica
Aprilia AF1 125 Replica
Aprilia AF1 125 Replica

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