Lightweight Rear Rotor for Aprilia - Original Version

SBU Lightweight Rear Rotor for Aprilia - Original Version

Fitment:

• Aprilia RSV4 (all years and variants)
• Aprilia Tuono (all years and variants)
• Aprilia RS 660 (all years & variants)
• Aprilia Tuono 660 (all years & variants)

Note: This is the original version of the rotor and was intended for non-ABS bikes.  We have alot of customers that have used this version on ABS equipped Aprilias without any issues.  Since the center of the rotor isn't recessed sometimes the ABS tone ring can be too close to the wheel speed sensor to read properly.  That is quickly and easily fixed by putting a washer behind the bolt for wheel speed sensor to space it out.   It also has tapered bolt holes to secure the rotor.   The diameter of the taper is larger than the flange on the OEM bolts, so when using you are those the ABS tone ring is partially supporting the bolt flange.  But it is thick enough so it doesn't deform when tightened to OEM specs.  We recommend using aftermarket rotor bolts with a larger head so they are fully contacting the rotor service (we can supply Pro-Bolt for you).  

Made from high-carbon stainless steel, these are heat treated to make one of the lightest and strongest rear rotors on the market. Extensive heat testing of these rotors has been done, including dragging the rear brake on a dyno until the rotor is glowing red multiple times, with absolutely no warping. They have been used in professional racing and have secured wins in every class in MotoAmerica. These units typically weigh approximately 1 pound, often less than half of your OE unit.

The term ‘un-sprung weight’ refers to any part of a bike’s mass not supported by the springs of its suspension. The relationship or ratio between the sprung and un-sprung parts of a bike can have a big impact on the suspension’s performance, both in terms of comfort and tire grip. Lowering the weight of bike parts, sprung or otherwise, will have advantages in terms of acceleration – thrust divided by weight equals acceleration. This will add power and/or reduce the weight of the bike and therefore the bike will be faster. When you eliminate 3kg from a 100bhp, 200kg bike it is roughly equal to gaining one extra horsepower.

For example, if you reduce the weight of a wheel, it will have even more effect on acceleration, as power is used in acceleration of the rotation of a wheel (along with tires, sprockets, discs) itself. Any weight saved on these rotating parts, means less power used in spinning them up to speed and a consequent increase in the power left to accelerate the mass of the entire bike. As a direct, result, weight lost from the wheels or rotors, will be directly felt by the rider.