125-130 lbs
The compression ratio of a 2004 KTM 250 SX is approximately 13.5:1. This high compression ratio helps improve the engine's performance and responsiveness, making it suitable for motocross and off-road racing. It's important to use the appropriate fuel type to support this compression for optimal performance.
The KTM 50 SX Junior is 23 inches, the 50 SX Pro Senior is 25.6 inches.
KTM 50 tops out around 50-52 mph my 06 ktm 50 hits 55-60mph
85 mph
As far as I know, there is no adjustment.
You can find that info , as well as a lot more, here: http://motocross.transworld.net/2003/07/09/2004-ktm-125-sx-200-sx-250-sx-and-525-sx/
about £1400
In the center of the head (on top of the cylinder).
under the gas tank
The KTM 50 SX, designed for young riders, typically has a compression ratio of around 10.5:1 from the factory. This compression ratio contributes to its performance and responsiveness, making it suitable for entry-level motocross racing. Riders and mechanics can adjust various factors, including fuel type and tuning, to optimize performance further.
The sx is for supercross.
A KTM 65 SX should typically have a compression ratio of around 12:1 to 14:1. In terms of actual compression pressure, it can range from 120 to 150 psi when tested with a compression gauge. Maintaining proper compression is crucial for optimal performance, so ensure that the engine is in good condition and that the piston and rings are not worn. Regular maintenance and checks are recommended to keep the compression within this range.