Aluminum Alloy Bike Brake Rotor Mountain Bike

Condition: 100% brand new
Item type: Bike Floating Disc
Material: Aluminum alloy inner frame + stainless steel outer frame
Optional Color: black + silver, red + silver
Size: Approx. 203mm/8in
Hole distance: the center distance to the hole is 44mm/1.7in
Weight: Approx. 230g
Process: CNC engraving and milling, anodizing, stamping forming
The floating disc appears to solve the problem that after the continuous friction temperature rise of the integrated disc, the temperature at the center of the disc is different from that at the edge green position due to thermal expansion and contraction, resulting in internal tension.
Generally speaking, there are two kinds of materials inside and outside the floating disc, which are connected by rivets. This connection is not rigid. The thermal attenuation is related to the high temperature resistance of the material, and the floating disc will not reduce the thermal attenuation. However, if the disc material and design are optimized and the heat dissipation capacity is strengthened, the anti attenuation ability will be improved.


Aluminum Alloy







Lead time


Bike Brake Rotor, 203mm Aluminum Alloy Mountain Bike Type Floating Brake Disc Bicycle Brake Rotor with Bolts Cycling Accessory Fit for Road Bike Mountain Bike MTB BMX


  • ☛【QUALITY MATERIAL】- The reinforcement of aluminum alloy bracket completely solves the problems of rivet rubbing clamp and strength.
  • ☛【REDUCE THE HEAT TRANSFER】- Two kinds of materials inside and outside the floating disc are connected by rivets. This connection is not rigid and has a certain amount of free, which reduces the heat transfer.
  • ☛【FLOATING BUTTON DESIGN】- Stainless steel floating button design, so that the outer dish is not directly locked with the hub, leaving expansion space.
  • ☛【CNC MACHINING】- CNC precision manufacturing, high hardness.2 different colors for you to choose, meet your different needs.


Competitive factory price and superior quality

Professional and experienced technology team

Focus in high precision CNC machining

Consistently meet the tight tolerances required

Low MOQ and free sample

Short lead time (20 working days)

 ISO9001:2008 certification and materials accord with Rohs standard

Excellent after sale service and good warranty

Our service

Electronic and communication, Aerospace, Optical instrument, Medical and pharmaceutical,

Oil, gas and petroleum, Railway, electric tool, car, robot, hydraulic equipment


CNC Machining Center, CNC Lathes, CNC Milling Machines, wire cutting, laser cutting

Stamping machines , Assembly lines, Whole set of measurement tools

Precision Processing

CNC machining, CNC milling and turning, laser cutting, drilling, grinding, bending, stamping, welding and so on

Drawing format

JPEG,PDF,DWG,DXF,IGS,STEP.CAD or according to your sample


Stainless Steel, Brass,  Aluminum, Steel, Carbon Steel, Titanium , plastic. Or other Exotic Alloys

Surface Finish

Anodize; Blacken, polishing, plating, sand blasting


+/- 0.002–0.20 mm / can also be customized.


100% inspection before shipping

Payment Terms

30%T/T in advance, the balance before delivery;  Paypal is acceptable


  1. Drawings (CAD, STP, PDF formats) or Sample
  2. Quantities; Materials; tolerance; surface treatment or other special requirements
  3. Our engineer can offer technique supports to design or modify drawings according to requirements from customers

Lead Time:

  1. Sample Lead Time: 3~7 days
  2. Production Lead Time: 10~30 days based on different products
  3. Shipment time: 7 days with DHL/FEDEX/UPS; 20 days with fast Ocean shipment; 30~45 days with Normal Ocean Shipment

Quality Guarantee:

  1. We have IQC inspect all raw materials at incoming department
  2. IPQC inspect and measure the machining parts during mass production
  3. OQC inspect and measure the finished products according to Drawings and SIP documents with MIL-STD-105E
  4. We guarantee all products/parts comply with drawing and other quality criteria requirements on the contract and approval documents, will rework all defect products or refund to customers if receive non-good products.

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