Gears & Driveline - Regear, Differential Rebuild, Lockers & Driveshaft Experts in Middle Tennessee
Bigger tires, towing, or highway RPMs off? Music City 4×4 builds and tunes your driveline the right way — precision gear setup, dialed pinion depth and backlash, quality bearings, and test-drive verification. Middle Tennessee's trusted shop for regears, differential repair, lockers, and driveshaft services.
Core Driveline Services
We focus on the hard stuff other shops avoid. Every build includes quality parts, proper torque specs, pattern checks, and a 500-mile inspection policy on request for gear installs.
Differential Regear
Restore power and drivability after larger tires. Corrects shift points and highway RPMs. Ring & pinion install with new bearings, seals, shims, and setup pattern.
Lockers & Carriers
Selectable and automatic lockers, limited slips, and upgraded carriers installed and shimmed for longevity and traction.
Driveshafts
Custom-length shafts, U-joint conversions, double-cardan options, and vibration diagnosis. Balancing and angles measured correctly.
Axle Service & Seals
Axle bearings, seals, unit hubs, ball joints, and knuckle service for solid-axle Jeeps, Broncos, and trucks.
Gear Noise & Vibration
Pattern and preload re-checks, pinion yoke service, and driveline angle corrections to eliminate howl, whine, or shudder.
Towing & Overland Setups
Regear and locker strategies for towing, overlanding, and mixed highway/off-road use. We'll spec the right ratio for your use.
Our Setup Process
Confirm tire size, axle, trans, and use case; recommend optimal ratio.
Tear-down with inspection of bearings, carrier, and housing run-out.
Pinion depth, shim pack, backlash and preload set to spec; tooth pattern verified hot.
Break-in guidance, fluid choice, and post-install checks. 500-mile re-inspection for gear installs available.
Why Music City 4×4
Precision gear techs. Transparent quotes. Clean installs. We build axles and drivelines every week — from JL/JT and Bronco M190/M210 to Super Duty and 2500/3500 trucks. Middle Tennessee trusts us with regears, lockers, and driveline fixes.
Locally Built for Middle Tennessee
Gears & Driveline — FAQ
Do I need a regear after bigger tires?
Usually, yes. Larger tires effectively raise your final drive ratio, hurting acceleration, shift points, and towing. Regearing restores power and normal highway RPMs.
How long does a differential regear take?
Most two-axle regears are completed in 1–2 days depending on parts and inspection findings.
What gear ratio is right for my Jeep, Bronco, or truck?
It depends on tire size, transmission, axle, and how you drive (highway vs. trails vs. towing). We'll recommend the best ratio for your setup.
Do new gears require a break-in?
Yes. Avoid hard acceleration for the first ~500 miles; allow cool-down between drives; change fluid at the specified interval.
Can you fix gear whine or vibration from another install?
Often. We'll inspect pattern, preload, bearings, and driveline angles to diagnose the root cause and correct it.
Ready to Regear or Fix Driveline Vibes?
Tap for a fast quote or call a shop. We'll spec the right ratio, locker, and driveshaft solution for your build.
