The CBR1000RR Fireblade SP2 is a road legal homologation special using the Fireblade SP as a base, ready for race use.
Revised cylinder head: valves, combustion chambers and pistons
Racing kit to be available
17YM CBR1000RR Fireblade SP2
Visually the carbon pattern insets and gold striping interwoven into the Tricolour paint mark the Fireblade SP2’s difference over the ‘stock’ machine and gold Marchesini wheels (reducing front/rear wheel inertia by 18/9%) are another clue. But the real differences – and what gives the Fireblade SP2 ultimate racing potential – lie inside the engine and, in turn, the parts that can be added from the two race kits that will be available.
While the 76mm bore is identical to the SP, the Fireblade SP2 cylinder head runs 1mm larger 31.5mm diameter intake valves and 1.5mm larger 25.5mm diameter exhaust valves, with 10°/12° included valve intake/exhaust included valve angles (from 11°/11°). The valve pitches are identical, maintaining cylinder head width.
It runs the same 13.0:1 compression ratio but uses valve shapes and combustion chambers optimised for efficiency. Elongated spark plugs and a water jacket tightly wrapped around the combustion chambers improve cooling; this technology is derived directly from Honda’s RC213V MotoGP machine.
The pistons use an exclusive crown design with heat treatment that strengthens the area around the piston boss, which itself employs a 2.5mm shorter (and 8g lighter per cylinder) piston pin. Ready to house high-lift camshafts the outer diameter of the valve lifter has grown 2mm to 28mm, while total height and thickness have been reduced saving weight.
The Fireblade SP2’s electronic control devices are the same as those of the SP, with exclusive SP2 settings. For both race and general circuit use, a racing kit will be available.
* Includes first registration and road tax
|Type||Liquid-cooled 4-stroke 16-valve DOHC inline-4|
|Bore x Stroke||76 x 55mm|
|Max. Power Output||1141kW/13,000rpm|
|Carburation||PGM-DSFI electronic fuel injection|
|Fuel Tank Capacity||16L|
|Clutch Type||Wet, multiplate with diaphragm spring|
|Final Drive||#530 O-ring sealed chain|
|Dimensions (L x W x H)||2,065mm x 720mm x 1125mm|
|Caster Angle||23° 30'|
|Wheels Type Front||12-spoke cast aluminium|
|Wheels Type Rear||12-spoke cast aluminium|
|Rim Size Front||17M/C x MT3.5|
|Rim Size Rear||17M/C x MT6|
|Tyres Front||120/70ZR17 58W|
|Tyres Rear||190/50ZR17 73W|
|Electronic Combined ABS||2-channel|
|Brakes Type Front||320 x 4.5mm dual hydraulic disc with 4-piston calipers and sintered metal pads|
|Brakes Type Rear||220 x 5mm hydraulic disc with single-piston caliper and sintered metal pads|
|Suspension Type Front||Telescopic inverted fork with an inner tube diameter of 43mm, and a NIX30 Smart-EC (OHLINS) Front Fork with preload, compression and rebound adjustments, 120mm stroke|
|Suspension Type Rear||Unit Pro-Link with gas-charged TTX36 Smart-EC (Ã–hlins) damper featuring preload and compression and rebound damping adjustment, 60mm stroke|