Do these Dura-Ace pads perform noticably better than Ultegra pads in an "Ultegra brake set"?

There is not a noticeable difference.

Are these for carbon or aluminum rims?

Aluminum. Carbon rims need special pads. They usually come with the wheels.

I'm not sure if these are the right pads for me- the dimensions listed here , I suspect are wrong (3 in X 4 in?).

You're right, they aren't 3" x 4", maybe 3/8" by 2 1/2".

Will these fit Ultegra BR-6800 brakes?

I really don't know but why not take the old pads off and compare them to the picture? I would suggest that if your brakes are of fairly new design, they will fit.

Brand	SHIMANO
Material	Metal
Color	Black
Number of Pieces	1
Global Trade Identification Number	00689228284876, 04524667284871, 06892280717280
Manufacturer	Shimano
UPC	689228071728 689228284876
Item Package Dimensions L x W x H	4.17 x 3.5 x 0.35 inches
Package Weight	0.02 Kilograms
Item Dimensions LxWxH	4.75 x 3.75 x 0.75 inches
Item Weight	0.01 Pounds
Brand Name	SHIMANO
Warranty Description	Limited Warranty
Model Name	Br-7900
Suggested Users	unisex-adult
Number of Items	1
Part Number	8FN 9809
Model Year	2012
Style	Br-7900
Included Components	Brake Shoe and Pad
Size	One Size
Sport Type	Cycling

SHIMANOBrake Shoes

التفاصيل

الوصف

المواصفات

لديك سؤال؟ انظر ماذا طلب الآخرون

الأسئلة الشائعة