Honda VTR1000 RC51/SP1 Acceleration & Top Speed

Honda RC51 SP1 0-60 mph in 2.99 seconds

The VTR1000 SP1 (RC51) was Honda’s answer to Ducati V-Twin dominance in World Superbike. The RC45, while an exceptional motorcycle and multiple title winner, became less competitive through the era of the 916/955.

It seemed the rules favoured the larger twin cylinder engines over the smaller revier 750s, so Honda made one of their own to compete with the newly released Ducati 996.

Honda VTR1000 SP1 (RC51) Dyno Curve

Honda’s VTR1000 SP1 (RC51) is powered by a 996 cc 90-degree L twin engine that formed the basis of Honda’s WSBK effort.

Claimed power was 136 horsepower at the crank, though when measured at the wheels the SP1 produces 120 horsepower at 10000 rpm. Torque is a healthy 71 ft/lb made between 6700 rpm and 8000 rpm.

On the road, the engine feels linear and flat, though like many 1000 cc Superbike

Twins, the engine does pick up nicely from 6000 rpm, though this surge on the road does not feel quite as pronounced as it looks on the dyno.

The SP1 (RC51) for its day was a very powerful and fast motorcycle and was one of the fastest of the 1000 cc twins, but still did not hold a candle to the fours, such as the R1.

Honda VTR1000 SP1 (RC51) in-gear acceleration

The first and second gears are spaced quite widely, with a 30 mph difference in speed between them, while the remaining gears are much closer together.

This gear ratio spacing choice is typical of many homologated superbikes.

The idea is to have a long first gear, something that can work with very slow and haripin corners without the need to change gear because the rider runs out of rpm.  

At the same time, the gear is not too long that acceleration is compromised on corner exit.

Second gear is long too, likely for slightly faster corners and for the same reason.  The remaining gears are all close together.

Like many 1,000 cc V-twins, top gear is a little taller than it ideally needs to be.

The SP1 could theoretically reach almost 190 mph if held flat to the rev limiter –  a speed its 120-horsepower engine had no realistic chance of achieving.

That said, ram-air effect would have added a few extra horsepower at very high speeds.

Despite the unconventional and truly track-inspired gearing, the Honda SP1 (RC51) is responsive in all gears, but it really needs to be in fourth gear for strong acceleration from highway speeds.

Four-cylinder motorcycles of the same era will often pull just as hard in top gear as the VTR does in fourth gear, thanks to shorter overall gearing and comparable mid-range torque.

This is typical of 1,000 cc V-twins, which generally run longer fourth, fifth and sixth gears compared with their four-cylinder rivals.

Honda VTR1000 SP1 (RC51) Acceleration through the gears

The Honda VTR1000 SP1 (RC51) is no slouch and was considered blisteringly fast in its day.

By today’s standards, it still moves well and can match or even beat many modern motorcycles in the 0–60 mph sprint.

This is because 120 horsepower and an extra 20 kg over newer rivals is often easier to exploit than 190 horsepower in a bike that is 20 kg lighter.

Sometimes less really is more.

Once you’re used to the iffy fueling and not-so-nice clutch, this makes the SP1 exceptionally easy to launch hard.

It dips under three seconds for the 0–60 mph sprint with a time of 2.99 seconds and covers 0–100 km/h in 3.09 seconds.

The 0–100 mph time is an impressive flat 6.00 seconds, making the SP1 quicker off the line than pretty much any 600 cc supersport of its era.

The SP1 only needs third gear right at the limiter to reach 0–200 km/h in 8.87 seconds.

Shortly after hooking into fourth gear, it crosses the quarter-mile line in 10.67 seconds at a terminal speed of 133 mph.

Die-hard L-twin fans might not be too chuffed to hear that the SP1 only offers 600 cc-level performance all the way to flat-out.

It reaches 0–150 mph in a flat 16.00 seconds – quick for a 600, but slower than a modern sub-1,000 cc V-twin superbike such as the Panigale V2 – a motorcycle that punches much harder up top than the SP1.

The top speed of the Honda VTR1000 SP1 (RC51) is 166 mph. This can almost be achieved in fifth gear at the limiter, or in sixth, though the revs barely rise once sixth is engaged.

There is still some rpm left in top gear, so a full exhaust system and a custom tune would likely see the SP1 pulling a genuine 170 mph-plus, but stock it struggles.