Yamaha YZ450F Throttle Grip Replacement 

When Partzilla-sponsored supercross competitor Scott Champion crashed his 2018 Yamaha YZ450F, his dirt bike needed — among other repairs — a throttle grip replacement. 

Our resident Yamaha motorcycle pro John Talley was more than happy to help Scott out. Watch the video above or follow the steps below to see how to replace the throttle grip assembly on a Yamaha YZ450.

Yamaha YZ450 throttle grip replacement

Tools and Parts - Yamaha YZ450F Throttle Grip Replacement

Buy Yamaha dirt bike throttle grip

Buy jumbo screwdriver set

NOTE: One thing John replaced on Scott’s YZ450 before working on the throttle grip is the shifter. If you’re doing that, check the end of the shift shaft and on the shifter itself for a dot, which need to line up when installing it.

Yamaha YZ450 dirt bike shifter

Yamaha YZ450 dirt bike shifter replacement

Yamaha YZ450 Throttle Grip Replacement

Step 1. Slide the throttle grip up on the handlebar, then take the forward cable and bring it around the bottom and get it in the groove.

Yamaha YZ450 dirt bike throttle grip assembly replacement

Yamaha YZ450F throttle grip assembly replacement

Yamaha YZ450F throttle grip replacement

Step 2. Take the backside and lay the cable in place into its holder. Hold the assembly together, then bring the second cable around through its slot. Bring it up facing into the other one, then take the back half of the assembly and hold it all together.

Yamaha YZ450F throttle grip change

Yamaha YZ450F dirt bike throttle grip change

Step 3. Rotate the assembly toward you, then install the two Phillips head screws that hold the bracket in place and tighten them down with the screwdriver.

Yamaha dirt bike throttle grip change

Yamaha dirt bike throttle grip replacement

Step 4. Push the throttle assembly all the way in, then tighten the bottom screw first, followed by the top screw. 

Yamaha supercross bike throttle grip replacement

Step 5. Check to make sure there’s just a little bit of play on the throttle grip, but not much. Maybe about a third of a millimeter before it engages.

Yamaha YZ450 supercross bike throttle grip replacement

Step 6. Pull the cover over the throttle grip assembly and you’re done.

Yamaha YZ450 motorcycle throttle grip replacement

 
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GRIP UPPER CAP
Yamaha

GRIP UPPER CAP

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