M.O.R.E. Bomb Proof Motor Mount Kit for Chevy LS Gen III/IV Swap - Jeep Wrangler YJ 1987-1995
Warranty Information
Vendor warranty summary
M.O.R.E. Warranty
At a glance: RockProof Lifetime Warranty for the original buyer while they own the vehicle; finish, rubber and urethane are wear items
This is M.O.R.E.'s warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 15, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| M.O.R.E. products bought from an authorized M.O.R.E. dealer (bumpers, skid plates, mounts, brackets, steering and suspension parts) | Lifetime, while the original buyer owns the vehicle |
| Powder coat and other finishes | Wear item, not covered by RockProof |
| Rubber and urethane (bushings, body mounts, pucks) | Wear item, not covered by RockProof |
What's covered
- A M.O.R.E. product that fails, for the original retail buyer, for as long as they own the vehicle
- Repair or replacement of the defective part, at M.O.R.E.'s choice
- Products bought from an authorized M.O.R.E. dealer or distributor
What's not covered
- Finishes (powder coat and others), rubber and urethane, which M.O.R.E. treats as wear items
- Parts that were altered or modified, or installed on a vehicle M.O.R.E. doesn't list
- Damage from improper installation, fire or accident
- Installation, removal and reinstallation costs, shipping, and consequential or incidental damages
How to make a M.O.R.E. warranty claim
- Get a Return Goods Authorization (RGA) number first; M.O.R.E. won't accept a warranty return without one
- Have a copy of your original receipt showing where you bought it, the date and the price paid
- Ship the part back freight prepaid and insured, following the instructions from the dealer you bought it from
M.O.R.E. contact: Mountain Off-Road Enterprises, 685 Highway 92, Delta, CO 81416 · Email: info@mountainoffroad.com · Monday–Friday 8:00–5:00 MT · Contact page
Bought it from NVMOS? Start with us.
M.O.R.E. routes warranty returns through the dealer you bought from, so that's us. Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll get the RGA started with M.O.R.E. and help it along.
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Disclaimer: The information on this page describes M.O.R.E.'s (Mountain Off-Road Enterprises) own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: M.O.R.E. official warranty and return policy. Last updated on nvmos.com: October 15, 2026. See our return policy for NVMOS's own terms.
About the brand
M.O.R.E. (Mountain Off-Road Enterprises)
M.O.R.E. (Mountain Off-Road Enterprises) has been building Jeep parts in Colorado since 1978. NVMOS carries its Rock Proof bumpers, steel and aluminum skid plates, Bomb Proof motor mounts, Hide-A-Steps and leaf spring suspension parts for Jeep Wrangler, CJ, Gladiator and Cherokee, plus Toyota 4Runner, Tacoma, Tundra, Sequoia and Ford Bronco.
Based in: Delta, Colorado · Made in: USA · Since: 1978 · Lead time: Rock Proof bumpers built to order, 6–8 weeks
Shop all 314 M.O.R.E. (Mountain Off-Road Enterprises)WarrantyAll brands
Warranty terms are set by M.O.R.E. (Mountain Off-Road Enterprises), not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
Big tires, deep gears, lockers and serious torque can tear stock motor mounts apart in short order. This M.O.R.E. Bomb Proof motor mount kit is built for YJ owners swapping in a Chevy LS (Gen III or Gen IV) engine, part of the motor mount line M.O.R.E. is known for.
It fits 1987-1995 Jeep Wrangler YJs with a Chevy LS Gen III or Gen IV engine and a driver-side drop transfer case. This style (JM400) is for Jeeps with no body lift or a 1-inch body lift. Black polyurethane bushings sit between the steel parts so you aren't running steel against steel.
M.O.R.E. designs these mounts to bolt into existing holes in the frame and engine, and most installs need no modification, but an engine swap is never fully predictable: some applications may call for drilling or welding. Plan your swap with that in mind and torque everything to spec.
M.O.R.E., based in Delta, Colorado, designs and manufactures its parts in-house in the USA. The RockProof Lifetime Warranty covers the mounts against product failure for the original retail purchaser for as long as they own the vehicle; the polyurethane bushings and the finish are wear items and aren't covered, and neither are altered parts, improper installation or installs on the wrong vehicle.
Questions on fitment? Call or text the NVMOS crew at (920) 249-7744 — real humans in Sheboygan, WI.
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Specifications
M.O.R.E. Bomb Proof Motor Mount Kit for Chevy LS Gen III/IV Swap FAQs
Which transfer case does it work with?
M.O.R.E. lists it for a driver-side drop transfer case.
Will it work with a body lift?
This JM400 style is for Jeeps with no body lift or a 1-inch body lift.
Is it truly bolt-in?
In most applications it bolts to existing frame and engine holes with no modification. Some swaps may need drilling or welding.
Are the bushings covered by the warranty?
No. Polyurethane bushings are wear items under the RockProof Lifetime Warranty; the mount itself is covered against failure for the original purchaser.
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