The picture shows a One Way bearing insert which can be push fitted into the Tamiya TGSR/TNS engine, or the Thunder Tiger Pro21R engine ome way pull start bearing housings or Roto / Electric start bearing housings.
Fits any 8mm starter shaft
It is compatible with the following manufacturers of engines
Tamiya TGS / TGSR / TNS 7684167
Thunder Tiger Pro 21R
Listing is for 1 x brand new one way bearing insert, as shown in the second picture. The hex cases and outer cases shown in the last picture are not included.
I have created a "how to" series on YouTube which includes How To replace a one way bearing insert. Head over to the help and advice section of my website to see how easy it is!
simply drift out the old bearing with a round bolt head, or suitably sized round rod. then press fit the new bearing into place using a vice or similar. Just remember to ensure the bearing is the right way round (turns in the right direction). All replacement bearings are marked, to help you get this right.
If you would like further assistance please ask, or if you would like me to replace the bearing for you, just buy one first so we can exchange details. (the only charge for this service is return postage)
Buy With Confidence from RCScrapyard:
With over 40 years of hands-on experience in Radio Control, we know RC inside and out - from classic Nitro-powered vehicles to the latest high-performance Electric models.
We're proud to be Authorised Tamiya and Kyosho Dealers, supplying genuine parts, kits and accessories direct from official channels. Every order is carefully checked, securely packaged, and dispatched using insured and trackable delivery.
RCScrapyard is the winner of the 2025 eBay for Business *Pioneer Business* Award, recognising excellence in customer service, product knowledge, and trusted expertise.
Whether you're buying your first model or adding to a lifelong collection, you can buy with complete confidence - our commitment to quality, honesty, and after-sales support comes as standard with every purchase!
Please Note:
Packaged items are sold on a 30 day return basis, and returns will be accepted provided the packaging is unopened.
Used or second-hand spares are sold as seen, and are non returnable.
Please feel free to ask any questions, I will endeavour to answer them promptly both before and after the sale.