Refund policy

We want you to get the right parts the first time. If something isn't right, here's how returns work at Hi-Rev Dyno & Engine.

Return window

You have 30 days from the delivery date to request a return. After 30 days we can't accept the item back.

What we can take back

Parts must be new, uninstalled, and in the original manufacturer packaging with all hardware, instructions, and inserts included. The packaging needs to be intact — please don't write on or tape shipping labels directly to the manufacturer's box.

What we cannot take back

  • Any part that has been installed, run, or shows signs of use. Camshafts, lifters, valve springs, pushrods, and other valvetrain components cannot be returned once installed — even if the engine was only turned over. This is an industry-wide rule; installed valvetrain cannot be resold.
  • Custom tunes, tune files, and flashed/programmed PCMs or ECUs. These are made for your specific vehicle and cannot be resold.
  • Electrical components (sensors, harnesses, controllers) once the packaging is opened.
  • Special-order and non-stocking items brought in specifically for your build.
  • Gift cards and clearance/final-sale items.

Restocking fee

Approved returns are subject to a 15% restocking fee. We'll waive it if the return is our error — wrong item shipped, or a part we mis-specced.

Return shipping

The customer pays return shipping unless the return is our mistake or the item arrived defective. We recommend a trackable, insured method — we can't issue a refund for a package that doesn't arrive.

Damaged, defective, or wrong item

Inspect your order as soon as it arrives. If anything is damaged in transit, defective, or not what you ordered, contact us within 5 business days of delivery with your order number and photos of the item and the packaging. We'll make it right — replacement, exchange, or refund.

Manufacturer defects are handled through that manufacturer's warranty process. We'll help you file and follow up on the claim.

Tuning services, dyno time, and deposits

Scheduling deposits for dyno and street tuning hold a slot on our calendar and are non-refundable, but they are transferable — if you need to reschedule, contact us at least 48 hours before your appointment and we'll move your deposit to a new date. Labor and dyno time already performed are not refundable.

How to start a return

  1. Email hirevtuning@gmail.com or call (909) 566-7586 with your order number and the reason for the return.
  2. We'll review and, if approved, send you an RMA number and the return address.
  3. Write the RMA number on the outside of the shipping box (not the manufacturer's box) and ship it back.

Returns sent without an RMA number may be refused or delayed.

Refunds

Once we receive and inspect the return, we'll email you with the result. Approved refunds go back to your original payment method within 5–10 business days, less the restocking fee and any original shipping charges. Original shipping is non-refundable unless the return was our error. Depending on your bank or card issuer, it can take a few extra days to post.

Exchanges

The fastest way to swap a part is to return the original for a refund and place a new order for the item you need, so you're not waiting on the return to clear.

Questions before you buy?

If you're not sure a cam, spring, or injector is right for your combination, call us before you order — (909) 566-7586. We'd much rather spec it correctly up front than process a return. Fitment questions are free.

Hi-Rev Dyno & Engine · 1285 N. Fitzgerald Ave, Rialto, CA 92376