Table of Contents
How much HP does a RM125 make?
Engine
| 1975 Suzuki RM 125 | |
|---|---|
| Displacement | 123 cm³ / 7.5 in³ |
| Horsepower | 23 – 26 hp (17 – 19 kW) @ 10,500 RPM |
| Maximum Torque | 16.7 Nm (1.7 kgf-m, 12.3 ft-lb) @ 9,500 RPM – RM125M; 17.5 Nm (1.79 kgf-m, 12.9 ft-lb) @ 8,500 RPM – RM125 S |
| Top Speed | 65 mph (105 km/h) |
How do you know when you need a top end rebuild?
When you see dirt in the intake, you’ll need to tear down the top end to check for damage. A damaged cylinder may need reconditioning or replating. The same goes for when you find your intake boot and airbox was not sealed properly. Anytime you find leaks, you’ll want to tear down and inspect for damage.
What is a top end rebuild 4 stroke?
Referring to the “top end” of a four-stroke is generally referring to the piston, cylinder, and head, including all the components the head houses.
How often should you rebuild top end 4 stroke?
A four-stroke has slightly different intervals between rebuilds, the top end is generally rebuilt at the 25-30 hour mark if you’re a regular racer, and more importantly on a 250F, which is typically ridden more aggressively.
How hard is it to rebuild a top end 2-stroke?
With a few tools and a little knowledge, a 2-stroke top end rebuild can be done by any rider in a matter of hours. Bottom end rebuilds will take a lot longer, but they can also be done by anybody with a couple of days to spare.
How much does a top end rebuild cost for a 4 stroke?
When you are using all OEM parts, which includes all new bearings throughout the engine, a cylinder head (reconditioned or new), new valvetrain, new crank, new piston, new cam chain and tensioner, and a freshly honed cylinder, the cost comes out to be between $1300 and $1500.