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Disc brakes have to be reliable. And Bosch disc brakes are even more reliable than you might expect. Thanks to the use of high-quality materials they even cope with extreme strains. Just one example: On full braking, the braking power is several times higher than the engine power. Temperatures in excess of 750°c can then arise between the pad and the brake disc. Only absolute top quality is able to withstand such extreme thermal and mechanical stress over the course of time - in other words, Bosch quality.
Outer Diameter [mm] | 288 |
Brake Disc Thickness [mm] | 11,9 |
Minimum thickness [mm] | 10 |
Height [mm] | 64,8 |
Bolt Hole Circle Ø [mm] | 108 |
Brake Disc Type | solid |
Centering Diameter [mm] | 68 |
Number of Holes | 5 |
Surface | Coated |
Fulfils ECE norm | ECE-R90 |
Drill Diameter, up to [mm] | 16,7 |
Designation | Rear brake disk; rear |
---|---|
Trade abbreviation (HKB) | BD421 |
Standard designation | E1 90 R - 02C0357/0172 |
Maximum mounting hole diameter | 16,700 mm |
Pitch circle diameter | 108,00 mm |
Lateral runout | 30,00 µm |
Hub diameter fit | H9 |
Disc thickness variation (DTV) | 15,00 µm |
Minimum brake disc thickness | 10,0 mm |
Maximum thickness | 12,0 mm |
Hub diameter | 68,00 mm |
Meets manufacturer standards / specifications | ECE-R90 |
Number of holes | 5 |
Diameter (unpacked) | 288,00 mm |
Height (unpacked) | 64,80 mm |
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