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I spent some more time on the dyno this weekend testing exhausts and fuel controllers for a big writeup I’m working on. In the process, I also had a chance to personally test my 415 chain and sprocket kit against the stock 520 chain and sprockets (well, actually the rear sprocket was a lighter Vortex sprocket, but the chain and front sprocket were stock). The results are impressive, and undeniable. The stock 520 chain is a thick, heavy, o-ring style chain designed to last probably 30,000 miles or more on the R3. However, this heavy chain adds a lot of unnecessary weight and resistance to the drive train and robs horsepower before it ever reaches the ground. Changing to a 415 non o-ring chain and sprockets removes about 2.5 lbs from the system, and removes tons of friction, increasing the amount of horsepower and torque that actually reaches the ground at the rear wheel.
Read the full writeup and see the results here:
http://www.yamahar3racing.com/2016/02/dyno-tested-520-chain-and-sprockets-vs-415-chain-and-sprockets-yamaha-r3-2015/

Cheers,
Jesse
Follow my build and racing at YamahaR3Racing.com
The most complete resource for information and race parts for the Yamaha R3.

Read the full writeup and see the results here:
http://www.yamahar3racing.com/2016/02/dyno-tested-520-chain-and-sprockets-vs-415-chain-and-sprockets-yamaha-r3-2015/

Cheers,
Jesse
Follow my build and racing at YamahaR3Racing.com
The most complete resource for information and race parts for the Yamaha R3.
