The Toda 4AG (4valve) Inner Shim KIT B-spec removes weight from the valvetrain reducing inertia and friction allowing the engine to rev higher.
Features
- B-spec kit allows for high light camshafts more than 10.1mm
- Full kit includes all parts as pictured
- B-spec Upgrade Kit allows upgrade of the Toda 4AG Inner Shim kit to B-spec
- The kit contains standard size shims, but on occasion other size shims will be required to create the required gap, these are sold separately.
We ship to the United States and 150 other countries.
Japan Post EMS & ePacket, FedEx, DHL and more.
Toda Racing was founded in Okayama in February 1971 by Yukio Toda as a racing maintenance company. It won the Suzuka FJ1300 championship in 1978 and the All Japan Formula 3 championship in 1987, and it went on to build its own engines for Japanese Formula 3.
Toda is best known for its Honda engine work, and for parts that come from it: camshafts, valve springs, pistons, connecting rods, flywheels, throttle bodies and complete engines for Honda's VTEC engines, along with parts for Toyota and other makes.
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About NENGUN
Since the year 2000, NENGUN has supplied over 500,000 parts direct from Fukuoka, Japan to 170 countries worldwide. If you have any questions, our experienced and friendly customer service team is always happy to help, please send us an enquiry.









