What Is The Difference Between Parts HYD22FR And HYD42FR?
Updated 09/12/2025 | Published 05/26/2025
Question:
What is the difference between HYD22FR and HYD42FR.
asked by: Tobias S
Expert Reply:
Hey Tobias,
The only difference between the two brake kits is that the # KYD22FR has stainless steel calipers. Otherwise the kits are the same kit. Stainless steel calipers are going to be better for corrosion and resisting rust than the dacromet coated calipers on the # KYD42FR kit.
They are both the same exact brakes and capacities, I recommend if you find yourself towing frequently through different environments and moisture to go with the # KYD22FR that has the stainless steel calipers.
What area or conditions do you find yourself towing in more frequently?
Product Page this Question was Asked From
Hydrastar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 10" Rotor - 5 on 4-1/2 - 3.5K
- Trailer Brakes
- Disc Brakes
- Standard Grade
- 5 on 4-1/2 Inch
- Hub and Rotor
- 1/2 Inch Studs
- 3500 lbs Axle
- 14 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- Hydrastar
more information >
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Nick S.
9/12/2025
Hey Tobias, did you decide which brake kit to go with based on your towing conditions? I'm asking because your experience could help others in similar situations.