BIGLKNM Engine Bolt Kit for Honda TRX400EX/TRX400X 102pcs (1999–2008) — Stainless, Corrosion-Resistant Fasteners

BIGLKNM's 102-piece engine bolt kit supplies stainless, high-hardness fasteners tailored for Honda TRX400EX / 400X Sportrax models made between 1999 and 2008.

If you service, restore, or upgrade a Honda TRX400EX or TRX400X, having a complete, corrosion-resistant bolt set saves time and reduces headaches. This comprehensive kit collects engine cover, exhaust, crankcase, starter, sprocket, oil filter, intake, and cylinder head fasteners in one package so you don’t chase individual screws. Each piece is polished and cleaned to remove residue and comes sized for the listed model years—verify fitment against your bike before installing.

What exactly is included in this 102-piece set?

The kit bundles a full assortment of engine fasteners grouped for common panels and components on TRX400EX / 400X bikes. It provides replacement bolts, screws, and washers to replenish worn or missing hardware during maintenance or engine work.

• Fasteners for exhaust, right and left crankcase covers, sprocket and starter covers.
• Bolts for oil filter cover, intake components, and cylinder head cover.
• 102 total pieces organized to match common repair needs—check the included picture and compare sizes to your parts.

How durable are these bolts and will they resist corrosion?

These fasteners are produced from high-hardness steel or alloy materials and receive a polishing step to reduce roughness and contamination. The stainless finish improves resistance to rust and wear under typical ATV engine conditions when installed correctly.

• Polished surfaces reduce sticking and simplify cleaning.
• High-hardness construction resists stripping and deformation during tightening.
• Washer included where required to protect mating surfaces and improve load distribution.

How straightforward is installation for a home mechanic?

Installation is direct: match each fastener to its corresponding cover or component and torque to the manufacturer’s specification. Lubricating the lower engine shield cover bolts and verifying thread engagement before final torque helps prevent cross-threading and eases future removal.

• Color-coded or picture guide in the listing helps identify bolt positions.
• Use proper torque specs and a calibrated driver to avoid over-tightening.
• Polished washers can be reused if undamaged; replace if crushed or corroded.

Will this kit fit my TRX400 model year and variant?

The set is designed for Honda TRX400EX and TRX400X Sportrax motorcycles produced from 1999 through 2008. Fitment is intended for the engine covers and related components listed, but variations can exist between trims and aftermarket parts.

• Confirm compatibility by comparing bolt lengths and head styles with your original hardware.
• Inspect the product images for size references and distribution of pieces.
• Contact the seller with your model year and part concerns if unsure before purchase.

Who this is for: This engine bolt kit is made for ATV owners, home mechanics, and restorers working on Honda TRX400EX or TRX400X Sportrax machines from 1999–2008 who want a complete, clean, and durable set of replacement fasteners. It’s particularly useful when reassembling engine covers after maintenance, replacing rusted hardware, or preparing a bike for long-term reliability during off-road use. Ensure you check sizes against your bike’s existing bolts to guarantee correct fitment before installation.