150 TBI conversion kit
$1,649.99
Pickup currently unavailable
*Please read fuel, oil, and TPS requirements before purchasing this product and any other 125/250/300 ECU related modification*
You must be able to adjust and set your TPS values with a TPS tool, or a volt meter and pig-tail set up. Those items can be found on the Electrical and Sensor page.
We have specified a min octane rating of 100, and recommend a 40/1 ratio for all the bikes with a high quality premix that has a flashpoint of 300 or more.
We have only tested oxygenated fuels up to 5.6%, results may vary.
We have tested many oils and have found great metal to metal engine protection with Motul 710 for single track or slower MX, (FP of 310 deg), and Motul 800 for hard MX, (FP of 480 deg).
We have also been running the motors with forged pistons and removing the thermostat for a more balanced running bike.
Comes with everything shown to convert your 125 TBI into a 150 TBI. You will need to re-use some of the 125 power-valve parts to fully convert it.
150 TBI cyl, insert, pv flapper, flapper bushings and o-rings, OEM 150 2 ring cast piston, rings, pin, c-clips and pin bearing, all top end gaskets and o-rings, and a drop in pre-flashed 150sx ECU.
You can upgrade to a Wossner forged piston for $139.
If you have a 23' 125, consider upgrading to some (6) hole injectors for a better atomization of fuel.