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Since the 1970s, Marlin has been pioneering differential builds and creating legendary gear setups. Our unique procedures and high-quality parts have earned us a renowned reputation for reliability and performance.

Why Choose Marlin Crawler Differentials?...
  • Expertise and Experience: Decades of differential building expertise.
  • High-Quality Components:
    • Yukon Ring & Pinion Gear Set: Ensures optimal performance.
    • Genuine Toyota KOYO & NSK Bearings: Japanese-made for durability.
    • Marlin Crawler EcoSeal Pinion Seal: Most heavy duty pinion seal available.
    • Marlin Crawler Solid Pinion Spacer: Built to withstand tough conditions.
    • Multi-pattern Pinion Flange: Versatility for various setups.
    • Yukon Setup Kit: High-quality for precision assembly.

Properly set up differentials are crucial for the performance and reliability of your truck. As highlighted on our Locker page, adding a locker can significantly enhance traction. The correct R&P gear engagement can mean the difference between lasting 50 miles and 50,000 miles.

We pride ourselves on building the best Toyota differentials. Recognized by Yukon as the #1 distributor and builder of high-quality Toyota differential products, we ensure you get the best. Install a Marlin Crawler Differential and drive worry-free.

Want to know how changing your differential ratio affects your engine and highway speeds? Use our calculators below to understand the characteristics of your new setup.

Click to view our Speed vs. RPM Calculators...

Engine RPM Calculator

R&P
Tire Size
Transmission Gear
Truck Speed MPH
=
Engine RPM

Truck Speed Calculator

R&P
Tire Size
Transmission Gear
Engine Speed RPM
=
MPH Truck Speed

Note: Be sure to double-check your tire's actual height. Your 35" tires may only measure 34-inches tall! If needed, we have a transmission ratio chart here.

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