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Drivetrain› Manual Transmissions and Components

Zumbrota Drivetrain

MR5 3rd & 4th Synchro Assembly Kit

Name: MR5 3rd & 4th Synchro Assembly Kit
Brand: Zumbrota Drivetrain
SKU: ZMM5R1-2.5A

$137.89

SKU: ZMM5R1-2.5A

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The USA Standard Manual Transmission MR5 3rd & 4th Synchro Assembly Kit is a replacement component for manual transmissions. This kit is designed for the MR5 transmission found in the Ford Ranger/F-150 and Mazda vehicles. It includes the necessary keys, springs, and blockers for the 3rd and 4th gear synchro assembly.

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The USA Standard Manual Transmission MR5 3rd & 4th Synchro Assembly Kit is a direct replacement for worn or damaged synchro components in specific manual transmissions. This kit specifically addresses the 3rd and 4th gear synchronizer assembly, crucial for smooth gear engagement. This assembly is engineered for the MR5 manual transmission. Its application is specified for Ford Ranger and F-150 trucks, as well as Mazda vehicles equipped with this transmission. The kit comes complete with all necessary keys, springs, and blockers required for a comprehensive repair. With a shipping weight of 3.0500 LB, this USA Standard Gear product ensures that you have the correct parts to restore proper shifting function. Proper installation is recommended to ensure the longevity and performance of your manual transmission.

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

Brand	Zumbrota Drivetrain
Part Number	ZMM5R1-2.5A
Category	Drivetrain

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Returns & Fitment

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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