Quantity | Price per item | Discount |
4 items | AU$18.18 | 9% off |
Images 1-2: NAMI (2.5mm)
3rd image: Generic (2.0mm)
4th image: The Generic (44mm PCD) vs Generic 48mm PCD (2.0mm)
5th image: Measure on the 44mm PCD Generic
6th image: Measure on the 48mm PCD Generic
7th / 8th Image: optional screws
Notes:
Wave vs round and thickness: These discs have thickness of 2mm which is pretty much industry standard for wave style. eScootNow recommends wave style discs over thicker round style as wave has better preformation that improved cooling effect to reduce overheating as it allows heat and gasses to escape. The thinner discs have greater surface-area to mass/density ratio, so they tend to hold less heat when not operating and cool quicker. Heat retention associated with thicker or non-wave discs can increase brake temperature increasing likelihood of glazing the pads (lazy brake) and premature failure of calliper (seals) and hydraulics. It is common to see "smoke" or "gas" from callipers on heavy braking in Warriors fitted with factory round disc and Zoom Hydraulic brakes, whereas it is less common on similar brake systems on different makes that have adopted wave style disc (e.g. Teverun Fighter and Dualtron). The thicker disc will take longer to "warm up", however it does offer some additional resilience to being physically damaged (bent), however the thinners may be more subjectable to heat related warping especially if there is not even heat distribution across the circumference of the disc.
An informative write-up on wave style discs can be found at: motorcycle.com's KTM PowerParts Wave Disc Review. The author writes: "The reasoning behind the waves are twofold: Weight is reduced on the outer edges and heat dissipation is assisted by the larger surface area of the waves. Additionally, the irregular shapes cut in the swept area also help with heat dissipation by getting rid of the heated gasses generated during friction between the brake pads and the disc. The round holes in the OEM discs tend to capture the gasses and carry them around as the disc rotates, much like a rider in a basket on a ferris wheel. The irregular holes create turbulence that causes the hot gasses to be scavenged by the neighbouring cooler air as the disc turns."