Unlike the forecasts of many pundits the all new CBR1000RR Fireblade retains an in-line four-cylinder powerplant ino 2020.
However, while it does not share the V4 layout of the RC213V MotoGP machine, it does share the same short stroke design and exact bore dimensions as the machine that Marquez races.
Forged A2618 aluminium (same material as used in RC213V-S) pistons swing off forged light-weight TI-64A titanium con-rods and slide a total of 48.5 mm inside an 81 mm bore towards a crescendo of 217 metric horsepower (160 kw) at 14,500 rpm, and 113 Nm at 12,500 rpm. That is the largest bore size of any four-cylinder superbike and a dramatic difference to the 76 mm bore and 55.1 mm stroke of the previous machine. That’s claimed 25 more ponies than the outgoing SP model.
Honda say they have concentrated on fighting friction losses using technical solutions developed on their MotoGP bikes to make the new engine as efficient as possible.
32.5 mm inlet valves and 28.5 mm exhaust valves are operated by finger-follower rocker arms and cam lobes are coated with Diamond Like Carbon (DLC) which Honda claims is a first for a mass produced motorcycle that translates to a 35 per cent reduction in friction losses compared to non DLC coated lobes.
Those large valves are driven by what Honda calls a semi-cam gear train system that they have taken out a patent on. Due to the high-lift cams the chain is driven from a timing gear located on the crank-shaft via the idle cam gear which makes the set-up shorter in length.
Crank big-ends are also DLC coated while the small-end bushes are made of shaved C1720HT Beryllium copper for high-rim reliability.
Despite their larger size than before, each piston is 5 per cent lighter than found in the previous model and the skirts are Ober coated (Telfon and Moylbendum base) and nickel-phosphorous plating for the pistin pin’s clip groove. All this HRC-like special bits inside the crankcases appear to be common across both models and are not limited to the SP.
Helping to keep the temperature under contral is a multi-point and multi-directional oil spray system which only operates at higher rpm. When not required at lower rpm check-balls within the jets shut off the flow of oil to help maintain more oil pressure elsewhere.
A totally new aluminium diamond frame uses the rear of the engine as the upper shock mount; the swingarm is longer and based on the RC213V-S design. The rigidity balance, weight distribution and steering geometry have been carefully adjusted for the increased engine output, in terms of front and rear grip levels, and feel for both.
In the standard model Showa’s 43mm Big Piston Fork (BPF) is matched to a Showa Balance Free Rear Cushion Light (BFRC-L). The front discs are larger in diameter and worked by new Nissin four-piston calipers while the ABS is adjustable for track riding.
The SP gets new 43mm Öhlins NPX front fork to replace the NIX fork of the previous model and second-generation Öhlins Object Based Tuning interface (OBTi) offers finer control of settings front and rear. The front discs are larger in diameter and worked by new Brembo Stylema four-piston calipers while the ABS is adjustable for track riding. The rear tyre is now sized 200/55-ZR17 on both machines.
A six-axis Inertial Measurement Unit (IMU) provides accurate 3D estimation of riding dynamics and provides input to manage all of the electronic systems. It also controls the new rod-type 3-level Honda Electronic Steering Damper (HESD).
Honda’s RC213V MotoGP machine has leant some of its slippery aerodynamics to the CBR1000RR-R, including winglets to increase downforce and improve braking stability. The riding position is also much more compact.
The fully customisable 5-inch TFT display offers intuitive control operated via a simplified four-way controller on the left handlebar.
2020 Honda CBR1000RR Fireblade Specifications
- Engine – Liquid-cooled 4-stroke 16-valve DOHC Inline-4
- Engine Displacement (cm³) 999.9cc
- No. of Valves per Cylinder 4
- Bore ´ Stroke (mm) 81mm x 48.5mm
- Compression Ratio 13.0 x 1
- Max. Power Output 160kW @ 14,500
- Max. Torque 113Nm @ 12,500
- Oil Capacity 4.0L
- Carburation PGM-DSFI
- Fuel Tank Capacity 16.1L
- Fuel Consumption 16.0km/litre
- Clutch – Wet, multiplate hydraulic clutch with assist slipper
- Transmission 6-speed
- Final Drive Chain
- Frame Aluminium composite twin spar
- Dimensions (L x W x H) 2100 x 745 x 1140mm
- Wheelbase 1455mm
- Caster Angle 24-degrees
- Trail 102mm
- Seat Height 830mm
- Ground Clearance 115mm
- Kerb Weight 201kg
- Front Suspension – Showa Telescopic inverted fork with an inner tube diameter of 43 mm, and a Big Piston Front Fork with preload, compression and rebound adjustment, 120mm stroke
- Front Suspension SP – Telescopic inverted fork with inner diameter of 43mm and Ohlins NPX Smart-EC with preload, compression and rebound adjustments. 125mm stroke.
- Rear Suspension – Unit Pro-Link with gas-charged HMAS damper featuring 10-step preload and stepless compression and rebound damping adjustment, 137mm stroke. Showa BFRC-Light
- Rear Suspension SP – Pro-Link with gas-charged Ohlins TTX36 Smart-EC damper featuring preload, compression and rebound damping. 143mm stroke.
- Front Rim 17 inch x 3.5
- Rear Rim 17 inch x 6.0
- Front Tyre 120/70-ZR17
- Rear Tyre 200/55-ZR17
- Front Brakes 330mm disc with radial-mount 4-piston Nissin caliper
- Front Brakes SP 330mm disc with 4-piston Brembo caliper
- Rear Brakes 220mm disc with 2-piston Brembo caliper
- Rear Brakes SP 220mm disc with 2-piston Brembo caliper
- Instruments TFT-LCD
- Security System HISS
- Headlight LED
- Taillight LED