I have one on my car. It looked real pretty in the box. I put it in my car and now I can't see it anymore. I "upgraded" from a stock 1.6L setup to the larger 1.8L clutch/flywheel combo. I didn't verify the actual weight but mine was reported to be 4.5 kg = 9.92 lb. The car seems more keen to rev. It is much easier to rev-match and heel-toe downshifts. Like many others have experienced with lightweight flywheels, mine does buzz on deceleration. I think it's due to the fact there's less mass to dampen crankshaft vibrations so there is added NVH. It was bothersome at first (thinking to myself did I screw up the install?) but now I hardly notice it at all. Once I add my Pitcrew Racing Clubman exhaust I probably won't be able to hear it at all. I like the added peice of mind of a steel flywheel and Toda Racing's japanese website has very detailed information on the production process. Showing all this engineering data really gave me confidence in the product. It was expensive but if I had to do it all over again I'd probably choose the same. If I were on a tighter budget I'd probably just get a Fidanza or ACT Prolite flywheel for $200 less that would function exactly the same. I guess I paid an extra $200 for peace of mind and to be different. Hope that helps.
Toda / Tuckin99 / Muruha billet chromo flywheels all seem to look physically identical !!? made by someone else and re-badged ?
I have a Muruha one ( not installed yet ) and it looks very well made cost me $300 new ... I have heard bad things about Fidanza alloy ones ( maybe BS ! ) but all the same I am happy with the Muruha item ...
One reason I specifically chose the Toda is because it was made by them for them in house. As for the others, I suspect they contracted out to have them manufactured by a specialist. That's not necessarily a bad thing. I, too, noticed that many of the rjdm flywheels look similar in appearance.
I installed a Toda in my 92 and it rang like a bell , when you go to a lighter flywheel you may hear more transmission noise , in the case of my 92 well it was way more than I expected , since the toda is made of a very hard steel , lots of chrome it transmitted the noise , I than removed it and got a Alum. flywheel ,and the noise went way downI think it had to do with dissimlar metals , who knows but , I did like the toda because of the material used to make it , being a welder and having welded alot of high chrome tubes , they work well in a boiler I liked high chrome flywheel well except for the noise .