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thomaswilcox59 Added a reply to 2024 Kawasaki KX450 and KX450X

9/9/2025 7:18am
Raced this past weekend at Glen, and noticed after the moto coolant was leaking out the weep hole and a little oil out the breather hose. Do you guys recommend oem water pump bearings or an after market?

thomaswilcox59 Added a reply to 2024 Kawasaki KX450 and KX450X

7/24/2024 8:38am
Was curious if anyone has made something similar to this with a bigger turning surface and bigger flat head to adjust the rear shock rebound without dropping the linkage? This is what comes with the WP6500 dropins.

thomaswilcox59 Added a reply to YZ450f gearbox issues :(

8/4/2022 12:05pm
And that’s exactly why I did it! lol. Super bummed. And 100%. . I tried giving the jap bike a chance and it’s almost like the transmission just isn’t built for the micro polish, maybe just the cyro treatment. I think by doing the micropolish it took off little pieces (I’m talking just deburring the corners and such for less...

thomaswilcox59 Added a reply to YZ450f gearbox issues :(

7/19/2022 11:28am
I had cyro treat and micro polish my 2021 yz450f.. My bike did exactly what the original post stated with 3 hours. 2nd and 4th gear had to be replaced and fork shift 1 and 2.

thomaswilcox59 Added a reply to 2020+ YZ450F High Comp Map?

4/3/2022 8:02pm
I have the PC high comp.. i said screw it and started testing maps.. Best one so far is the GYTR Head + Piston with u4.4 (mixed 50/50 works too).. I checked the plug after running it for 5 hours and plug looked great

thomaswilcox59 Started a new thread 2020+ YZ450F High Comp Map?

2/7/2022 10:26pm
Does anyone have a base tune for the 2020+ yz450fs with a high comp piston on the yamaha power tuner app? I cant seem to find anything, only the one they have with the head work. Thanks
This forum thread has 5 replies.

thomaswilcox59 Added a reply to 2020 yz450f problems

12/9/2021 7:54pm
You should be good, the 250s dont have this problem. Highly recommend doing the timing chain every 15-20 hours though on those depending on how hard you ride. And eventually getting a JE piston by pro circuit

thomaswilcox59 Added a reply to 2020 yz450f problems

12/9/2021 9:23am
I was lucky aswell. It was on a straight and not a jump thankfully. Super anal about maintenance too, my KTM went 100 hard hours before I did a rod haha. CW rods are bad ass too! If anyone needs a carillo rod I can help you out and get one, it’s just stamped by moose. Still scary and major...

thomaswilcox59 Added a reply to 2020 yz450f problems

12/8/2021 11:35pm
So now that I can finally talk about it, my brand new 21 had a rod failure. Exact hours was 23.9. Serviced constantly.Nobody buy the Aegis insurance. It’s a scam. These bikes are sold for “competition use” and the dealer will try and sell you out on their insurance. Once you get it and if anything goes wrong, their response...

thomaswilcox59 Added a reply to 2020 yz450f problems

9/19/2021 12:16am
Have a 2021 YZ450F. Rod shot through the cases. 21 hours. Had the twin air power flow kit on it since day one and changed the air filter every ride, oil every 2 hours, oil filter every 4 hours. Taking it back to where I bought it from on Tuesday. I’ll try to post updates in here as the process...