When it comes to building your own stock, component, or modified tractor, there are a wide range of impressive examples, all built with exceptional craftsmanship and top-quality manufactured parts. Across the nation and around the world, expert technicians and Tractor Pullers trust the quality and dependability of SCS Gearbox Manufactured parts on all of their builds. They know they are working with Top of the Line Products that they can rely on to do the job correctly.
If you want to build or modify a tractor that truly stands out, your first step is durable, streamlined, specialized parts. While there are thousands of parts and components that go into building an amazing mod, the key to phenomenal performance is in your engine, transmission, and wheel design. With our specialized components made from tough and lightweight materials, your modified tractor will not only showcase a striking appearance, but also will perform at the highest level.
Start with superior quick change gears, transfer cases and other components to build your modified tractor, or make long-lasting repairs to your current vehicle. See our nationwide and international dealer locations to order yours. Or Contact us direct to see what custom parts with can Build for you.
Gear Boxes & Combining Boxes
For building a high-powered stock component or modified tractor, having a gear box that meets your needs is essential. The gear box is a critical driving force behind your tractor, and designing or modifying a powerful engine does little good without an appropriate gear box to maintain it. Gearboxes are our namesake product, and we are very proud of our custom components built for tractors and truck of nearly any size.
SCS Gearbox’s products are designed and manufactured according to customer’s demands. You told us what you needed in your tractor pulls, and we listened. Our gearboxes give you maximum power and unleash the full potential of your engine, while providing optimal control, smooth shifting and the least amount of drag possible. With essential components built according to your needs, there is nothing slowing you down during your pull.
Count on SCS Gearbox for custom parts and specialized components that do your tractor justice. See our local dealers nationwide to find our components near you! Or Contact us Direct to see what custom work we can do for you.
Modified Tractor Gearboxes
SCS Gearbox Designs Modified Tractor Combination Gearboxes for Champions.
Gearboxes are Designed to the Customer’s Requirements.
We will Design and Build your Gearbox to meet All of your criteria for motor Combinations, rotations, gearing, and mounting.
Super Duty Single Speed 5.333 Centerline, Twin Counter Shaft
Super Duty 2 Speed 5.333 Centerline, Twin Counter Shaft
Super Duty Twin Countershaft 3 Speed With Reverse Mid Mount, 2 1/16-32 Output, 1 3/4-27 Input, Neutral switch & Reverse switch included
Super Duty Twin Countershaft 4 Speed With Reverse Mid Mount, 2 1/16-32 Output, 1 3/4-27 Input, Neutral switch & Reverse switch included
Super Duty Twin Countershaft 6 Speed With Reverse Mid Mount, 3 Speed with 2 Speed Hi & Lo Gearbox, 2 1/16-32 Output, 1 3/4-27 Input, Neutral switch & Reverse switch included, 25 9/16″ OAL
Super Duty T/C/S 2 Speed, Mid or Bellhousing Mount, w/10-Series Reverser
5.333 Take out Gearbox w/double bearing nose
–Transmissions for Single Engine Mods
Twin Counter Shaft Single Speed, Bell Mount or Mid-Mount, 1 ¾-27 In & Output
Twin Counter Shaft 2 Speed, Mid Mount, 1 ¾-27 In & Output
Twin Countershaft Single Speed With Reverse, 2 1/16-32 Output, Neutral switch & Reverse switch included, Clutch Brake Optional, Input Length per customer
Twin Countershaft 2 Speed With Reverse, 2 1/16-32 Output, Neutral switch & Reverse switch included, Clutch Brake Optional
Twin Countershaft 2 Speed With Reverse, 1 3/4-10 Output, Neutral switch & Reverse switch included, Clutch Brake Optional, Input Length per customer, 1 3/8-10 Spline in stock, Pilot ID per customer
Twin Countershaft Single Speed With Reverse, 1 3/4-10 Output, Neutral switch & Reverse switch included, Clutch Brake Optional, Input Length, Spline, & Pilot ID per customer
30-Series with Reverse, 2 1/16-32 Output, Neutral switch & Reverse switch included, Input Length per customer, 1 3/8-10 Spline in stock, Pilot ID per customer
Planetaries for Tractors
The SCS Frankencaedes Planetary Kit
Replaces your Franklin internals with the SCS Mercedes Conversion Kit
- Saves about 45 Pounds per wheel
- 3.94 Gear Ratio
Franklin Planetary Components
New for 2015, SCS now offers Franklin Replacement Ring Gears
Franklin Replacement Planetary and Sun Gears in Stock
Early and Late Model Billet Spindles in Stock
Cat Replacement planetary and Sun Gears in Stock
Billet Spindles Per Request
Stocked Engine to Engine Misalignment Couplers for Chevy and Hemi Motors
Custom couplers available upon request