As a British engineering company, Hi Spec Motorsport Ltd.

manufactures conversions, calipers and rotors at our premises in Dartford, Kent.


With over 25 years of experience making brake components,

Hi Spec Motorsport Ltd can manufacture conversions for many vehicles.

Please select options below and add to cart to view cost of brake conversion.

Hi Spec entire range of calipers are made from highest quality billet aluminium.

Hi Spec’s caliper are made to extreme specifications and tolerances.

Hi Spec road calipers are designed, tested and proven to be used on race cars.

Hi Spec road calipers are available in hard anodised black for function or powdercoat red, yellow, blue, black or silver.

Hi Spec road calipers (except our Ultralite range) come equipped with dust boots to keep dust, dirt and grime away from the piston seals.

15”-16” Front Road Brake Conversions

2 piece disc brake conversion contents example picture.

Billet 4 - Brake Conversions


Our Billet 4 brake conversions are great value for money and the calipers are immensely popular due to this fact. They offer great performance on light vehicles not running too much power and are used on the road.

Please check out our caliper section for more information on great calipers.

Monster Brake Conversions


Monster calipers look stunning as well being pretty robust. They are suited for light to middle weight vehicles that are running decent power and are used on road and track.

They are more suited to heavy use than the Billet 4, due to larger pad area.

Please check out our caliper section for more information on great calipers.

Monster 4 vs Monster 6 Brake Conversions


One of the main difference between the calipers is that the Monster 4 is a 4 pot caliper and the Monster 6 is a 6 pot caliper.

Aesthetically, the Monster 6 looks better and also functions better as being a 6 pot caliper, it has been engineered to drastically decrease and almost eliminate pad taper wear.

Hi Spec 2 piece disc brake conversions contain:


A pair of radial mount calipers.

A pair of mounting brackets and hardware.

A pair of bells and hardware.

A pair of curved 48 vane rotors.

Recommended brake conversions as per wheel size below:

Please request wheel clearance diagram to be absolutely sure our brake conversion will clear your wheels!

Road or Race

Minimum recommended wheel size

Caliper

1 or 2 piece disc

Disc/Rotor Size

Road kit

15” Wheel

Billet 4

2 Piece Disc

285

Road kit

15” Wheel

Billet 4

2 Piece Disc

300

Road kit

15” Wheel

Billet 4

2 Piece Disc

310

Road kit

16” Wheel

Monster 4

2 Piece Disc

285

Road kit

16” Wheel

Monster 4

2 Piece Disc

300

Road kit

16” Wheel

Monster 4

2 Piece Disc

310

Road kit

16” Wheel

Monster 6

2 Piece Disc

285

Road kit

16” Wheel

Monster 6

2 Piece Disc

300

Road kit

16” Wheel

Monster 6

2 Piece Disc

310

All prices exclude vat.

Vat will be added in cart.

Our conversions are made to order. Please allow approx 28 days from your purchase date to shipping of your Hi Spec conversion.

Before ordering, please check your wheel clearances.  Hi Spec calipers are wider than the standard sliding caliper, therefore we cannot guarantee fitment for every wheel on the market.