RT195 kit - which gearbox

[mark65]

Hi,

looking to upgrade the SX150 gearbox on my RT195 (25 mm PHBL dellorto & BGM v4 exhaust) Few choices to think of; Italian (or early Spanish) Li150 or either the AF or Casa close ratio box.

Advice greatly appreciated on what i could expect to achieve with these choices against the SX150 gearbox.

Thanks

[hullygully]

li150 with 16T drive's probs your cheaper option bud

[ULC Soulagent]

Li150 15/46 fd5.2 or 16/46 fd 4.9 if u want a little more top end but loose out on bottom n midrange grunt.
Suppose it’s what you want the scoot too pull will determine what gearbox n ratio ya go with

[dickie]

Personally, I don't see a huge advantage in a 5 speed 'box with that set up.

A motor with a fairly wide spread of torque like yours won't really justify it.

If you mean the 4 speed close ratio box, I'd avoid the AF ones. They've had quality issues recently and can be a pig to set up, or impossible.

My personal preference is the Indian GP200 due to the short jump between 3 and 4.

The 5 speed option makes more sense if you do a very varied type of riding and could use 5th sort of like an overdrive.

[Keith64]

Ive ended up with GP200 Italian gearbox, 18t sprocket, 46t crown wheel for 5.1 ratio. Seems almost perfect for me as i sometimes travel 2 up which was painful on a 150 box at 4.89 ratio. I have a NOS indian gp200 box to go in next strip down which should close the gap between 3rd and 4th a little.