Fasteners› Engine Fastener Kits

Bolt Lock

Bolt Lock Engine Fastener Kit for Yamaha YFZ450R

$39.99

SKU: E-YFZ4-0408

In Stock
In Stock
Ships by Nov 18
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Bolt Lock E-YFZ4-0408 is a two-stroke engine fastener kit designed for the Yamaha YFZ450R. This kit includes all external fasteners from the top to the bottom end of the engine. Specifically, it provides hardware for the heads, reeds, cylinder, crankcase, case saver, water pump, left case cover, ignition cover, inner and outer clutch covers, and power valve covers.

This kit is also well-suited for older two-stroke restoration projects, offering a comprehensive solution for replacing worn or missing fasteners. The fasteners are manufactured to original equipment manufacturer (OEM) specifications and are tested for professional use in racing environments.
Show original supplier description
The Bolt Lock E-YFZ4-0408 is a two-stroke engine fastener kit designed for the Yamaha YFZ450R. This kit includes all external fasteners from the top to the bottom end of the engine. Specifically, it provides hardware for the heads, reeds, cylinder, crankcase, case saver, water pump, left case cover, ignition cover, inner and outer clutch covers, and power valve covers. This kit is also well-suited for older two-stroke restoration projects, offering a comprehensive solution for replacing worn or missing fasteners. The fasteners are manufactured to original equipment manufacturer (OEM) specifications and are tested for professional use in racing environments.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBolt Lock
Part NumberE-YFZ4-0408
CategoryFasteners

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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