Mountain Bike Reviews Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
10,341 Posts
Discussion Starter · #1 ·
Hayes have released at Sea-Otter three new variants of their award winning Dominion A4 disc brake:

Hayes Dominion A2 is a 2 piston version of the same brake: https://hayesdiscbrake.com/product/dominion-a2?cat_id=33
Dominion-A2-A4-Website-MasterDominion-A2-Caliper_1.jpg

J-UNIT versions have been released of the Dominion A4 and A2. These have a new lever designed for smaller hands:
Dominion-A2.jpg
The giveaway is the bigger span between the pivot and the grip on the blade. Compare to the adult version below:
Dominion-A4-WebsiteDominion-A4-MC_2.png

Same pricing, same adapters, same rotors as the existing A4 series but the D series rotor now has a smaller 160mm option.
 

·
Registered
Joined
·
10,341 Posts
Discussion Starter · #3 ·
so the A2 uses the same pads as the A4?
Different pads but same compounds, I haven't seen them yet but I expect they'll be smaller. A4 brake is deceptively large.

A2 P/N's are 98-36141-K102 for semi metallic. K101 for sintered metallic.
 
1 - 3 of 3 Posts
Top