Bicycle disc brake calliper aimed at dependable rear stopping for flat-mount 160 mm setups. Confidence at the back wheel helps commuters and weekend riders feel safer on varied roads. Is the SHIMANO Altus BR-UR300 Disc Brake Calliper the practical upgrade worth fitting?
⚡ At a Glance
- • Braking Performance: Reliable stopping once correctly configured, users report steady modulation
- • Best for: Commuters and cyclists fitting a rear flat-mount caliper for 160 mm rotors
- • Not ideal for: Riders who expect all mounting hardware included without additional parts
Flat-mount rear disc calliper intended for 160 mm rotors, supplied in a standard colour. Package dimensions 8.5 cm x 17.3 cm x 22.6 cm, package weight 250 g, origin China.
Confident rear braking, thanks to flat-mount compatibility for 160 mm rotors
Flat-mount interface positions the calliper for the correct alignment with 160 mm rotor spacing, matching common rear caliper mounts. The geometry suits frames designed for direct flat-mount attachment.
Predictable rear stopping after correct alignment, suitable for riders who want consistent braking on standard 160 mm setups.
Simple installation, with a small additional part sometimes required
User reports indicate that a minor extra part may be needed to complete fitting on some frames or adapter setups. The extra part appears to be straightforward and commonly available.
Most fits are uncomplicated once the required item is identified, so planning ahead avoids workshop delays and keeps installation smooth.
Lightweight and compact package, with easy handling and storage
Package weight is listed at 250 g and dimensions measure 8.5 cm by 17.3 cm by 22.6 cm, making transportation and storage straightforward. Compact packaging also simplifies courier handling.
Easy to carry as a spare or to a bike shop, and adds only modest mass to the bike once fitted.
✨ The 4 Key Reasons for SHIMANO Altus BR-UR300 Disc Brake Calliper
- Flat-mount compatibility – Ensures clean rear installation on compatible frames and forks
- 160 mm rotor fit – Matches widely used rotor size for many bikes
- Compact package weight – Small 250 g package simplifies shipping and workshop handling
- Proven setup reliability – Users report steady performance after fitting required extra part
📋 Technical Details at a Glance
- Category: Disc brake calliper, rear, flat mount
- Mount Type: Flat mount
- Rotor Compatibility: 160 mm
- Position: Rear
- Colour: Standard
❓ Frequently Asked Questions
Q: Is the calliper compatible with 160 mm rotors?
A: Yes, compatibility with 160 mm rotors is specified in the product name and intended rear flat-mount use.
Q: Will the calliper include everything needed for installation?
A: Some users report needing a simple additional part to complete fitting, so check frame mounting hardware before installation.
Q: Where is the product made and what are the package dimensions?
A: The package originates from China, with dimensions 8.5 cm x 17.3 cm x 22.6 cm and a package weight of 250 g.
🏆 Our Verdict
The SHIMANO Altus BR-UR300 Disc Brake Calliper suits cyclists who need a rear flat-mount caliper for 160 mm rotors and value dependable braking once configured. Compact packaging and reliable reports from users make it a practical fit for commuters and weekend riders. As a cost-effective option, it offers good long-term value provided any minor additional fitting parts are accounted for.
