SHIMANO Ultegra SM-RT800 Disc Rotor Gray, Centerlock 140mm
Brand: SHIMANO
Color: Gray
Categories: Sports & Outdoors, Sports, Cycling, Parts & Components, Bike Brakes & Parts, Brake Parts, Rotors

It's hard to argue with the improves power and all-weather performance that disc brakes bring to road cycling. It's a given in other cycling disciplines and we have already started to see some big names get important race victories aboard disc brake bikes. Shimano's Ultegra SM-RT800 Disc Rotors feature Freeza technology to cope with the sustained braking and higher temps associated with road cycling. This centerlock rotor continues Shimano's trickle-down technology from Dura Ace that further advances the Ultegra range. Ice-Tech Frezza refers to the hybrid 3-layer sandwich construction of steel and aluminum. The stainless steel adds durability and consistent braking at the surface while the aluminum drops weight and helps dissipate the heat that can build up on long technical descents by up to 50-degrees Fahrenheit. When paired with Ice-Tech pads, temps that would normally be in the 400-degree range operate at a much lower 300-degree number. Lower temperatures improve braking performance and prevent fade for more confident descending.The rotors are available in 140 and 160mm diameters and include a lockring.

Material: aluminum, stainless steel
Attachment Type: centerlock
Diameter: 140, 160mm
Claimed Weight: [140mm] 3.7oz (106g), [160mm] 4.5oz (127g)
Activity: cycling

Brand: SHIMANO
Material: ‎Stainless Steel Outside / Aluminium core
Exterior Finish: Stainless Steel
Number of Items: ‎1
Item Package Dimensions L x W x H: ‎7.68 x 6.5 x 1.26 inches
Brand Name: ‎SHIMANO
Part Number: ‎ISMRT800S
Package Weight: ‎0.22 Kilograms
Manufacturer: ‎Shimano
Item Weight: ‎0.4 Pounds
Date First Available: June 7, 2017
ASIN: B071G6DVQY
Color: ‎Gray
Item Dimensions LxWxH: ‎7.75 x 6.5 x 1.25 inches
Included Components: ‎Rotor x 1, Manual x 1
Sport Type: ‎Cycling
Customer Reviews: 4.7 out of 5 stars 227 ratings 4.7 out of 5 stars
Size: ‎160