Wentzville’s Trusted Driveline Component Specialists

Engineered Durability & Precision for Every Street Rod, Drag Car, and Off-Road Rig

Located just south of Rotary Park and moments from the Wabash Trail, PEM Racing brings its championship-proven driveline expertise to Wentzville’s automotive community. Whether you’re rolling past historic Main Street or pushing down the throttle at nearby Gateway Motorsports Park, our custom CNC-machined drive shafts, REM-microfinished ring & pinion gear sets, quick-change rear ends, and turnkey 9″ Ford rear end kits are built to perform. Finished with cryogenic treatments and precision balancing at our Saint Clair, MO facility, PEM Racing parts deliver the strength, reliability, and smooth power delivery you need to dominate quarter-mile runs and conquer gravel-strewn backroads alike.

Client Success Stories & Testimonials

Samantha Prather

The customer service is amazing, Brock and Taylor did a wonderful job helping out and making sure all my questions were answered! Also from ordering to picking up my driveshaft was also super quick and awesome! Can’t say enough great things about PEM! Thank you so much :)

Ryan Higginson

Ordered a rearend housing and axles on eBay from pem. Talked to Brock before placing the order to ensure you it was the one I needed for my project. I was informed it would take 5-7 days to build and time to ship to me. Needless to say I ended up getting it to my door in 5 days. Like 5 days not 5 business days. Beyond happy about that and they sent me an amazing product

Devin Mainord

Always great people to work with. Answer all questions you may have without making you feel Like a idiot! Great quaility and Prices!

Service Area Coverage

Precision Gear Assemblies

High-strength, REM-microfinished ring & pinion sets optimized for drag, circle-track, and street use.

Custom Driveshaft Fabrication

CNC-balanced shafts built to your exact length, spline count, and flange spec for flawless power transfer.

Quick-Change Rear End Systems

Modular gear cassettes and indexing plates let you swap ratios trackside in minutes—no specialty tools required.

Complete 9″ Ford Rear End Kits

Turnkey packages with licensed housings, spools, bearings, and all necessary hardware for a seamless install.

Performance Brake Conversions

Rear disc brake kits engineered to handle modern high-torque engines with confidence on both asphalt and gravel.

Off-Road Driveline Upgrades

Reinforced axles, heavy-duty yokes, and flange kits built to withstand Missouri’s toughest trails.

REM & Cryogenic Treatments

Advanced cryogenic hardening and microfinishing processes that extend component fatigue life under extreme loads.

Professional Workshop Tools

Bearing presses, alignment fixtures, and specialty lubricant kits to streamline your shop builds.

Why Choose PEM Racing

What Makes Us Wentzville’s Top Pick

Missouri-Based Manufacturing
From CNC machining to microfinishing and cryogenic treatment, everything is done at our Saint Clair facility—no overseas delays.
Micron-Level Precision
CNC machining and REM microfinishing ensure every part meets the tightest tolerances for peak performance.
Rapid Turnarounds
Regional shipping and on-site assembly mean you’re back on the road or track in days, not weeks.
Custom-Tailored Solutions
From classic street rods cruising Pearce Boulevard to pro-mod dragsters at WWTR, we match gear ratios and driveline specs to your exact build.
Proven Durability
Preferred by local car clubs, off-road enthusiasts, and collegiate racing teams across Greater St. Charles County.
Dedicated Technical Support
Our team of racer-engineers offers hands-on guidance from initial consultation through final installation, ensuring flawless driveline performance.

Ready to Upgrade Your Driveline in Wentzville?

Call PEM Racing at Call (636) 629-6200 or email to discuss your custom driveline project today.