I have been using your 415 chain kit (18 teeth front / rear between 54/55/56) since I converted my bike to track/race only after ~100 miles of street break in. I have maintained this chain religiously, cleaning and lubing them every 100 miles of use (~3 sessions at track, or 1 race). I was told these being o-ring/seal-less, need much more maintenance than sealed chains. It only takes a few minutes to clean and lube them, even at the track after a couple sessions. I constantly check the slack in the chain, and also how loose it gets by pulling off the rear sprocket. If you see any gap between sprocket and chain, its time to replace it.
I now have ~1500 miles of trackday/race miles on this chain. Finally, after all this abuse, the chain felt loose enough that I didnt have trust in them anymore. I ran out of adjustment to tighten them anymore (rear axle all the way back). It also showed some daylight when I tried to lift them off the rear sprocket, so I knew it was time to replace it or risk catastrophic failure.
Conversion to hours: ~32hours (5.5 sessions of 20 mins, 16 trackdays + 4 races @13minutes * 3 weekends + 1 more race @13 minutes)
I'm staying with this chain kit due to its low rotational mass. I've never seen any other kit/bike to freely spin the rear like with this kit. I don't have dyno numbers, but believe this is best for power gains to the rear wheel also.
I'm now on my second chain after 1500 miles/ 32hours on first chain.
I'll gladly recommend this Spears 415 chain kit to all other 300cc class bikes (R3 and Ninja 300, afterall, the Ninja needs a bit more umph to beat the R3, haha), especially for race/track use with a caveat of more needed maintenance.
I now have ~1500 miles of trackday/race miles on this chain. Finally, after all this abuse, the chain felt loose enough that I didnt have trust in them anymore. I ran out of adjustment to tighten them anymore (rear axle all the way back). It also showed some daylight when I tried to lift them off the rear sprocket, so I knew it was time to replace it or risk catastrophic failure.
Conversion to hours: ~32hours (5.5 sessions of 20 mins, 16 trackdays + 4 races @13minutes * 3 weekends + 1 more race @13 minutes)
I'm staying with this chain kit due to its low rotational mass. I've never seen any other kit/bike to freely spin the rear like with this kit. I don't have dyno numbers, but believe this is best for power gains to the rear wheel also.
I'm now on my second chain after 1500 miles/ 32hours on first chain.
I'll gladly recommend this Spears 415 chain kit to all other 300cc class bikes (R3 and Ninja 300, afterall, the Ninja needs a bit more umph to beat the R3, haha), especially for race/track use with a caveat of more needed maintenance.