P23 Post Mount Disc Brake Adapter
Best upgrade for cyclists needing larger rotors on IS mount frames.
Upgrade your braking system with the TRP P43 Post Mount Disc Brake Adapter. This adapter is engineered to seamlessly connect post mount brake calipers to IS tab frames or forks, allowing for the use of larger rotors to enhance stopping power. It provides a +43mm adjustment, supporting configurations such as a 160mm post mount with a 203mm rotor, or a 180mm post mount with a 223mm rotor. Constructed for durability and reliability, it includes high-quality stainless steel mounting bolts for a secure and lasting installation, ensuring optimal brake customization for any ride.
$17.99
Owner Satisfaction
4.5
/ 5
Category Rank
670
/ 2104
#670 in Components
Price vs Category Average
-83%
Below average
Size
43
/ +mm
Who it's for
- Aggressive riders needing superior stopping power and heat management
- Performance cyclists prioritizing component reliability and precise fit
- Home mechanics seeking quick and straightforward brake upgrades
Who should skip it
- Budget-conscious shoppers looking for the most affordable hardware
- Weight-obsessed racers chasing every gram of bike savings
- Beginners uncomfortable with precise mechanical alignment and setup
Performance breakdown
Structural Integrity
Robust construction ensures reliable performance under heavy braking loads.
Installation Simplicity
Straightforward design makes upgrading rotor sizes a quick, painless process.
Compatibility Range
Versatile sizing options accommodate a wide array of modern braking setups.
Hardware Quality
Included stainless steel bolts resist corrosion and maintain a secure fit.
Alignment Precision
Engineered for exact spacing to prevent caliper rub and uneven wear.
Weight Efficiency
Lightweight build adds minimal mass while significantly boosting stopping power.
Key Specs
Size
+43mm
Weight
70g
Brake Caliper Type
Post Mount
Mount | Rotor Size
160 Post | 203 Rotor
Mfg #
ABAD000146
EAN
4717592032529
Features
- Adapts post mount brakes to IS tab frames/forks
- Enables larger rotor compatibility
- Provides +43mm adjustment range
- Includes stainless steel mounting bolts
- Optimizes brake caliper setup
- Ensures precise rotor sizing
- Durable construction for longevity
- Easy installation for customization
What customers say
Cyclists highly value the TRP P23 Post Mount Disc Brake Adapter for its exceptional quality and reliable performance. Users consistently praise its precision engineering and robust aluminum construction, which ensures durability across various riding conditions. A major benefit is the straightforward installation and accurate fit, effectively resolving compatibility issues between different frame and caliper standards. This perfect alignment is key to preventing rotor rub and maintaining optimal braking power. While the initial cost is noted as slightly higher than generic options, the consensus is that the superior fit, dependable performance, and peace of mind offered by this TRP component fully justify the investment. It is celebrated as a dependable solution for precise disc brake setups.
Know before you buy
This adapter increases the distance between your mounting points to accommodate a larger rotor. Specifically, it allows you to run a 203mm rotor on a 160mm post mount, or a 223mm rotor on a 180mm post mount.
Yes, this adapter is specifically designed to bridge the gap between IS tab frames or forks and post-mount brake calipers.
Yes, the package includes high-quality stainless steel mounting bolts to ensure a secure and corrosion-resistant installation.
The adapter is designed for standard post-mount calipers. While it is engineered by TRP for optimal performance, it is compatible with most industry-standard post-mount brake systems.
The adapter weighs 70g. It is built for durability, so while it adds a small amount of weight, it provides the structural integrity needed for larger rotors and increased stopping power.
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$18