Ballade Sports Rear Big Rotor Kit | Honda Civic Type R | FK8 2.0T K20C1 | 2017+
Ballade Sports, Civic Type R FK8, Rear 330mm Rotor Kit is a 2 piece CNC billet aluminium bell hub with an iron 330mm disk. The kit increases the rear brake disk by 25mm/ 1 inch to help even out the brake bias. The larger brake rotor disk offers higher lateral strength which increases stopping power. Cross drilled, slotted, or full face blank options are available. This is a great add on to match the new 2020 Fk8 2 piece rotor that now comes standard.
With the increase of 8.2% in size, there are two most common questions:
Isn't the extra inner space on the rotor surface not being utilised because of the pads being same OE size? Answer: correct, not used...for a reason.
You can see in the picture the caliper and pad assembly moved outward by 12.5 mm. The pad size did not change, and you don't want to change the pad size - unless you also upgrade the master cylinder and brake booster designed in the FK8. The FK8's master cylinder is designed with a set or defined pressure that's multiplied by the brake booster. Increasing the pad size or surface area without upgrading the master cylinder and brake booster, you've effectively reduced your pressure at the pad to rotor contact area...reducing your braking force.
Does a larger diameter make for more braking force?Answer: no, braking force is increased due to increase in "lever" length. Imagine you push on a lever that's 1 foot long around a centre point or fulcrum. Now lengthen that lever by 50% to 1.5 foot long. The result is more moment of torque. You work less but generate more torque; hence higher degree of brake torque or stopping power. This means the caliper-piston-pads assembly has to work 8.2% less but generates more torque ala more braking force. By simply increasing rotor size, you're already increasing braking force without doing anything else.
Honda Civic Type R | FK8 2.0T K20C1 | 2017+
Dream Automotive offers in-house fitting on all products at our workshop in Luton, Bedfordshire.