Aprilia RSV4 vs. 2009 Yamaha R1 on the dyno

Here’s an interesting comparison, the Aprilia RSV4 and the wishes-it-was-a-V4 2009 Yamaha R1 on the same dyno on the same day. The blue line is the Aprilia, red is Yamaha, both bikes are completely stock. According to official data measured at the crank, the RSV4 makes 178bhp at 12,500rpm and 84lb/ft of torque at 10,000rpm; the R1 is said to produce 180bhp at 12,500rpm and 85lb/ft at 10,000rpm. These curves are awfully close, but we’d take the marginal torque advantage the R1 appears to have between 6 and 9,500rpm.

KWS Motorsports via Aprilia Forum

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