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Fits: YAMAHA YZF 450, YAMAHA YZF 400, YAMAHA YZF 426, YAMAHA YZ 250, YAMAHA WR F 250, SUZUKI RMZ 250, SUZUKI RMZ 450, KTM XCW 525, KTM XC 525, KTM XCG 525, KTM SXS F 450, KTM SXS 450, KTM SXS 540, KTM SXS 250, KTM SXC 625, KTM SX F 250, KTM SX SXS 125, KTM SX 300, KTM SX 250, KTM SX 144
Super-controllable!
I bought these for my RSV4 RF running Circuit.
The OEM Master Cylinder is also Radial Type of brembo, but I changed the Lever Ratio from OEM Master Cylinder (16?19) to this Master Cylinder (16?18) to make the brake more controllable. I changed the Lever Ratio from the OEM Master Cylinder (16?19) to this Master Cylinder (16?18), and changed the Total Ratio to a slightly larger fineness, and made the Stroke longer and the Touch softer. 。
As a result, in Breaking Cornering. "Gatsun" It doesn't work with the "I", but it works with the "I" at the back just by gripping it, and you can roll it down to the full bank stably while subtly controlling the lever with two index and middle fingers.
In addition, it became easier to Control with two fingers by making it to Short lever.
By the way, the MASTER diameter is 16mm, which may seem small for the RSV4 with Piston 4 pod Caliper, but the standard model with ABS after 13 years model is 16mm MASTER. No problem! 。 If your model is not equipped with ABS, you should use 19mm, if you use 16mm, you will not have enough capacity and brake will not work.
There is no instruction manual for the installation, and the air bleeding is quite difficult with ABS, so it may be difficult to install unless you have experience. 。 In addition, since this Master Cylinder does not come with a brake switch, it is necessary to separately purchase a Hydraulic Switch or Mechanical Switch, and it is necessary to perform wiring processing incidentally.
I have a MechanicalSwitch kit from KOHKEN installed.
https://www.webike.net/sd/19843874/
The other candidate of Master Cylinder is RCS-17 which is made for SUPER SPORTS750 by ABSSpec. of the same brembo and has variable lever ratio. But this one is much more expensive and I heard a rumor from my friend that it lacks direct feeling even though it is RadialPump. 。 But now I look at it and I regret it a little because it looks Parenthesis good and it might have been good here.
Just changing the Master Cylinder will make a big difference, but if you want to use the Circuit as the main driving, it is recommended to change the Rotor with brembo or SUNSTAR RACINGRotor. 。 The RSV4 OEM rotors are nice and light, but they are thin and can warp when braked hard on the Circuit.
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