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Toda Start Motor Heavy Duty Ring Gear Honda K20A | F20 (DC5 | FD2 | AP1 | AP2)



Model #31214-AP2-000

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Engines using higher compression ratios and / or longer stroke crankshafts than standard place greater loads on the starter motor. Under certain conditions these loads have been found to break the made from resin internal ring gear of the stock starter motor.

The resin gear works perfectly well with the standard engine, but when used on an engine with both a stroker kit and higher compression ratio, the gear can soon be come damaged requiring a new starter. TODA Heavy Duty Internal Ring Gear uses high quality material along with a surface treatment for good compatibility with the internal planetary gears.

We highly recommend it for improved reliability when running a tuned or stroker kit engine.Honda genuine internal gear part number 31214-P3F-003 (DENSO) is the base unit who s internal gear which has modified. But the gear can also be replaced in other starter motors. However we can t guarantee that it will fit all starter motors, confirmation by comparing starter motor parts lists is required.


  • Toda Start Motor Heavy Duty Ring Gear
  • TODA Heavy Duty Internal Ring Gear uses high quality material along with a surface treatment for good compatibility with the internal planetary gears.
  • Honda Civic Type R
  • Acura Integra Type R
  • Honda Accord Euro R

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Vehicle Engine Notes
Acura RSX

Honda Civic

Honda S2000

Who is Toda Racing?

Toda Racing Co. was first established in 1971. They initially started as a maintenance company for race vehicles and engines. Since then, the company has participated in various racing disciplines such as the SUZUKA FJ1300 race, Formula 3, Formula 2, F3000, and more. Today, they have been widely known as one of the best Japanese aftermarket companies in the world.

Racing Background

Toda has been participating in motorsport racing for decades. Their years of racing experience had enabled the company to amass vital information that would, later on, help them create some of the highest quality parts in the market today. With a proven track record of producing race champions, they are widely sought after by top racing companies and has been the brand of choice by multiple car enthusiast and tuners everywhere.

Wide Range of Products

Toda offers a variety of products from cam gears, pistons, clutch kits, intake system kits, and more. All their parts are manufactured to complement each other resulting in an engine that is better performing than its stock counterpart and an engine that can outperform its competition.

All of their parts are still made in Japan by master craftsmen and engineers with decades of experience under their belts. This helps the company maintain the tradition of providing the best performance parts to its customers.

Purchase Toda Parts at Vivid Racing

If you wanted a brand that can give you that horsepower and reliability you are looking for, then Toda is the brand for you. They have always been a market leader when it comes to engine upgrade parts and is trusted by many enthusiasts worldwide. Visit Vivid Racing and check our list of products that would fit your specific needs.

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