Motive Gear MGK-130 Differential Ring & Pinion Front and Rear Complete Kit - 4.88 Ratio for 76-85 Jeep CJ with Front Dana 30 & Rear AMC 20 Axles
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Restores Classic Power & Acceleration: Running large off-road tires on original axle ratios bogs down your engine and causes severe sluggishness. This kit corrects your final drive ratio, returning your engine to its optimal torque band for responsive street driving and smooth highway cruising.
Matched Classic CJ Axle Sets: Engineered specifically to fit 1976–1985 CJ-5 and CJ-7 setups (Dana 30 front and AMC 20 rear axles), ensuring both gear sets are perfectly matched and synchronized for seamless, reliable 4WD performance.
Maximum Low-End Crawl Torque: Deeper gear ratios optimize low-speed crawling authority, letting your CJ creep effortlessly over technical rock gardens, steep inclines, and deep trail ruts without lugging the motor or slipping the clutch.
Heavy-Duty Heat-Treated Metallurgy: Modern ring and pinion sets are precision-cut from high-tensile 8620 steel and heat-treated to resist gear tooth chipping, shock-load fractures, and severe off-road strain far better than aging factory gears.
Reduces Drivetrain Strain & Heat: Oversized tires put massive stress on classic engines, clutches, and transmissions. Proper gearing relieves drivetrain strain, lowers operating temperatures, and helps protect your vintage components from costly mechanical breakdown.
Lifting a vintage 1976–1985 Jeep CJ-5 or CJ-7 and bolting on oversized mud-terrains gives it that classic, unbeatable off-road stance—but tall stock gears pay the ultimate price. The result is sluggish off-line throttle response, high engine strain on mountain passes, and a frustrating loss of low-speed crawl control on the trail. Re-gearing isn't just an upgrade; it’s the single best way to bring your classic Jeep's drivability and trail capability back to life.
The Motive Gear Differential Ring & Pinion Front and Rear Complete Kit is engineered specifically for classic CJ-5 and CJ-7 axle configurations—typically pairing the reliable Dana 30 front axle with the heavy-duty AMC 20 rear axle. By re-establishing your optimal engine power band, this kit restores crisp street acceleration and delivers maximum low-end crawl torque when navigating steep trails, mud holes, and rocky terrain. Built with modern metallurgy, Motive Gear gives your classic rig the strength it needs to conquer any adventure with confidence.
Jeep CJ-5
- 1983 Jeep CJ-5
- 1982 Jeep CJ-5
- 1981 Jeep CJ-5
- 1980 Jeep CJ-5
- 1979 Jeep CJ-5
- 1978 Jeep CJ-5
- 1977 Jeep CJ-5
- 1976 Jeep CJ-5
Jeep CJ-7
- 1986 Jeep CJ-7
- 1985 Jeep CJ-7
- 1984 Jeep CJ-7
- 1983 Jeep CJ-7
- 1982 Jeep CJ-7
- 1981 Jeep CJ-7
- 1980 Jeep CJ-7
- 1979 Jeep CJ-7
- 1978 Jeep CJ-7
- 1977 Jeep CJ-7
- 1976 Jeep CJ-7
Motive Gear Differential Ring & Pinion Front and Rear Complete Kit Options
| Part Number | Catalog # | Gear Ratio | Price | ||||||
|---|---|---|---|---|---|---|---|---|---|
| MGK-129 | 52440-2065 | 4.56 Ratio | $859.99 | ||||||
| MGK-130 | 52440-2066 | 4.88 Ratio | $858.99 |
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