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Set of pistons and brake caliper seals HAYES Dominion A2
Set of pistons and seals for the HAYES Dominion A2 brake caliper. The kit contains a set of 2x replacement caliper pistons, 2x piston seals, 1x seal for the flow hole between each caliper half and 2x bolts for connecting the two halves of the HAYES brake caliper. By replacing the pistons and seals you can get your brake caliper back in shape without brake fluid leaks. If you are unsure about replacing your brakes on your own, trust your brakes and the replacement of the pistons and seals to a professional service! ATTENTION! The seals and pistons are designed to use DOT 5.1 brake fluid. DO NOT USE MINERAL OIL - this will irreversibly damage the seals and void the warranty!
- set of pistons and seals for brake caliper of HAYES Dominion A2 brake
- by replacing the pistons and seals you can get your brake caliper back in shape without brake fluid leaks
- complete HAYES Rebuild kit for your brake caliper if your brake fluid has started to leak or the pistons have deteriorated
Contents of the package
- 2x brake caliper piston HAYES Dominion A2 (diameter 24mm)
- 2x HAYES Dominion A2 brake caliper piston seal (cylindrical seal)
- 1x seal for the flow hole between the two halves of the HAYES Dominion A2 brake caliper (o-ring)
- 2x M5 steel connecting bolt for both halves of the Dominion A2 brake caliper
Warning!
If you are unsure about replacing it yourself, have your brakes and pistons and seals replaced by a professional service! ATTENTION! The seals and pistons are designed to use DOT 5.1 brake fluid. DO NOT USE MINERAL OIL - this will irreversibly damage the seals and void the warranty!
This kit can be used for both the Dominion A4 and Dominion T4. However, a kit is available for the Dominion T4 model that includes titanium connecting screws. Kit number with titanium screws: 98-36139-K301
Video - Service of brake caliper HAYES Dominion
Video - Lubricating brake pistons HAYES Dominion
Data sheet
- For brake caliper HAYES
- Dominion A2/T2
- Google Ads - Label 0 - Category
- Calipers - Seals and pistons
Specific References
Manufacturer
Hayes Performance Systems
5800 W Donges Bay Rd
Mequon, WI 53092
email: techsupport@hayesbicycle.com
web: https://hayesbicycle.com
Representation for the EU
HB Performance GmbH
Dirnismaning 20 a
85748 Garching (b. Munich) Germany
email: techsupport@hayesbicycle.com
web: https://eu.hayesbicycle.com
Price history
Our pricing is always guided by the principles of a fair price. We do not artificially move prices or brag about inflated percentages. You can always find price history for each product in sale.


