🛠️ Complete Engine Rebuild Kit – Yamaha Banshee (All Years)
Stock Bore Cylinders – Wiseco Pro Lite Pistons – Maxlock Stud Kits
This is the ultimate stock bore engine rebuild kit for all Yamaha Banshee models and years. Built with performance, reliability, and ease of installation in mind, this all-in-one solution includes top-tier parts from trusted brands like Wiseco, Hotrods, Maxlock, and more.
🧱 Aftermarket stock bore Banshee cylinders
🥇 Wiseco 64mm Pro Lite forged pistons
🛠️ Wiseco hi-temp piston rings, chrome wristpins, and circlips
🔁 Wiseco or Hotrods crankshaft with rods**
🧩 Crankshaft woodruff key + flywheel lock nut
🔧 TZ and Maxload outer main bearings
⚙️ Transmission bearings, shift cam bearing, water pump bearing
🎯 Wristpin bearings
🧠 Aftermarket cylinder head
🧷 Maxlock Titanium head stud kit – Lifetime Warranty*
🧷 Maxlock cylinder to case stud kit
🧷 Maxlock case halves stud kit
🧲 Cylinder to case alignment dowel pins
🧰 Complete gasket kit + crankcase oil seal kit
🏁 Performance clutch kit
💧 Billet water pump impeller
🔥 NGK spark plugs
🫗 Intake manifolds for stock carbs
Ships in 5–7 business days – Each kit is hand-picked and packed by our expert parts team.
🔧 This is not a DIY product – 99% of failures result from improper installation. Use a qualified, experienced mechanic.
🛡️ Stud Warranty – If any Maxlock stud fails during proper use, we send a full replacement kit.
🔍 Warranty claims must include a physical return of the part(s) for inspection – no phone/photo-based claims accepted.
We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.
We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.
Sold items are removed daily.
If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.
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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!
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
I received the wrong center crankcase gasket
Hi there, thank you for bringing this to our attention. We apologize for the inconvenience of receiving the wrong gasket. We take pride in our products and want to ensure that our customers receive the correct items. We sell countless TRX400EX engine kits and we always ship the same gasket every time. In situations like this, we encourage our customers to reach out to us so we can rectify the issue. We would have been more than happy to ship out the correct gasket right away if you had sent us a picture of the wrong one. Please don't hesitate to contact us for any further assistance. Thank you for choosing our product.