prognosis of a broken CBR250RR

I am confident the gearbox is royally shagged on the bike. I went to Aidz's place, as the bike is stored there, and wheeled it out onto the road. I checked all the important bits prior to starting it with a rolling-start. There was plenty of fuel in the tank (near full), the position of the fuel petcock was set to On and the Kill switch was set to Run. I had Jack push me down the road and I clutched-out and gave it gas. The bike spluttered to life, but it didn't rev-out as you normally expect. It just sounded like someone going "Ahhhhh" when a doctor sticks a paddle in the patient's mouth. The rear tyre locked-up immediately and I was skidding along the road. As soon as I clutched back in, the engine would cut out. Looks like I will have to take it into a service shop to get the bike assessed.

Anyways, on a happier note, Aidz installed his new Akrapovic under-tail exhaust on his CBR600RR. It sounds great, with a nice bassy idle and plenty of volume. It makes me want to ditch my stock exhaust for something nice, like a Taylor Made shotgun-style exhaust.