Loaded in: 0.0012
Bolt measurements: 0.25" x 0.875".
Quantity: 12 Bolts with nuts and washers.
The new part number (CP3845-100K12) replaces part number CP2494-6.
Most racing and many high performance road brake discs are designed to be mounted on to the hub or stub axle by means of a mounting bell. Mounting bells are usually made from high grade Aluminium alloy although other materials can be used. This arrangement is much lighter than a one piece disc and bell, but more importantly allows some compliance to reduce the risk of distortion due to heat expansion of the disc. This becomes more important the larger the disc and is considered essential above Ø330mm diameter. There are essentially two methods of attaching the disc to the bell, ‘Bolted’ and ‘Floating’. The method to be used will depend on the particular application.
For lower duty applications and on smaller discs a bolted mounting is sometimes preferred for strength and simplicity especially for off-road application (e.g. Rallies) where debris may clog a fl oating mechanism leading to run-out and disc vibration. Stiff fl at bells should be avoided with a bolted mounting. Standard AP Racing disc mounting hole size is 6.40 / 6.45mm diameter. AP Racing offer a range of bolts, nuts and washers to suit. These are also available in wheel set kits, see below for details.
E8 - 6 Lobe Headed Bolt kits available for AP Racing discs are given in the table
below. The 6 Lobe bolt offers the following advantages over a cap head:
NOTE: Bolts, nuts and washers are not available separately, but can be purchased in boxes of 100.
The Cap Head bolt will continue to be available as a loose part in kits of 100. Contact for details.
AP Racing recommend a bolt / nut tightening torque for a disc and bell of 14Nm (10.5Lb/ft).
All Bolts ¼” UNF and Each of the kits contain the required number of CP2494-117 Nut & CP2494-1305 washer.
Need more information? Send us a message and we will do our best to help you.
AP Racing is the leading manufacturer of performance brake and clutch systems for road and race cars. The core product range includes clutches, calipers, discs, pads, master cylinders, pedal boxes and air jacks, as well as road and competition brake systems for motorcycles.
AP Racing, is a UK-based company and has achieved more international sporting success than any of its rivals, establishing itself as a key supplier at all levels of international motorsport formulae, including single seat racing, rallying, sportscar racing, stock car racing and touring cars. In 2011 alone, AP Racing supplied either brakes, clutches or both to 30 champions across the entire spectrum of the motorsport world.
In 2008 AP Racing became one of only a small number of European automotive component manufacturers to achieve registration to the ISO/TS 16949 quality approval standard. This certification underlines AP Racing’s commitment to provide the highest quality products and services to meet the exacting requirements of their customers.
Need more information? Send us a message and we will do our best to help you.
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Co-ordSport Ltd
Unit 1, Cleton Street
Tipton
West Midlands
DY4 7TR
Tel: +44 (0)121 557 27 07
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