TRX400EX Cylinder Head & Valve Cover Kits

Refresh your top end with TRX400EX cylinder head and valve cover kits—engineered for reliability, performance, and a perfect fit on your Honda TRX400EX. Whether you're doing a full rebuild or replacing worn components, this collection includes high-quality cylinder heads, valve covers, and related hardware to restore proper compression and engine performance. Each kit is designed to meet or exceed OEM specifications, making it easy to get your ATV back on the trail with confidence and power.

Banshee - Dipstick & Oil Plug Billet - Modquad

No more ticking!

My 400ex has never sounded better. New tensioner, guides, and chain fixed the noise. Metal bottom end gasket was cool too, didn't rip while working on it.

Thank you for your positive review! We're glad to hear that the TRX400EX Cam Chain Tensioner & Wiseco Heavy Duty Cam Chain Kit was able to fix the ticking noise on your 400ex. We agree, these small maintenance steps can make a big difference in the overall performance and sound of your vehicle. We appreciate your feedback and hope to continue providing quality products for your ATV. Happy riding!

Yfz450

Well my mechanic said it was some good parts in the box. I'll let you know how the rebuild goes. Great I hope

I haven’t received them yet

Trevor, thank you for your 5 star review. We appreciate that. Rest assured I just checked your tracking info and UPS says they will arrive today between 1:30 & 3:00 pm. Your going to love the Lectron Carburetors!

Great quality and fast shipping thanks

TRX400EX Cylinder Head & Valve Cover Kits

Check us out on Facebook

Check out our Instagram!

"Dune Goons Forever"

Let customers speak for us