by Simon Ananda Raj July 18, 2025 1 min read
The Polygon Bend R5 is a versatile gravel bicycle designed for mixed-terrain adventures. Its Gravel ALX frame provides a stable and practical foundation for long rides. The Shimano GRX 1×11 drivetrain offers a wide and useful gearing range. Its full-carbon rigid fork helps keep the bike lightweight and responsive. Wide 650×47C tires provide strong grip and stability on gravel surfaces. Hydraulic disc brakes deliver confident stopping performance across changing terrain. Overall, the Bend R5 is well suited to gravel riding, touring and bikepacking.
“A versatile gravel bike built for confident mixed-terrain exploration and adventure.”
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Product Rating Out of 5
✔ Shimano GRX drivetrain
✔ Lightweight Endurance Alloy frame
✔ Dropper seat post
✖ No Front Derailleur
✖ N/A
✖ N/A
Gravel ALX W/Flatmount
Acceleration was top notch and the riding position was comfortable.
Carbon
A lightweight Carbon fork which absorbs vibrations when riding on variable terrain.
Shimano GRX RD-GRX812 Shadow+ 11-Speed
The shifting was quick and responsive during the test ride.
Shimano RX810 Hydraulic Disc Brakes
These Hydraulic Disc brakes provide powerful, comfortable performance thanks to Shimano’s significant increase in modulation.
Performance Tire 650x47c Tubeless Ready
The Vee 650x47C tires were fast rolling on rough roads and single tracks.
N/A
N/A
The Bend R5 features a Gravel ALX frame developed specifically for gravel riding. Its geometry provides a stable and controlled riding position across mixed surfaces. The frame is carrier-ready, making it practical for bikepacking and touring. It also supports fender installation for greater everyday versatility. The bicycle is available in S, M and L sizes for different riders. Its clean design combines practical adventure features with a modern gravel appearance. Overall, the frame offers a strong balance of stability, versatility and functionality.
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This Endurance focused Road Alloy frame comes in 3 frame sizes
The Bend R5 uses a Shimano GRX 1×11-speed drivetrain for straightforward shifting. Its Shimano GRX RX812 rear derailleur is designed for demanding gravel conditions. The Shimano SLX 11-42T cassette provides a broad range for varied gradients. A 38T alloy crankset keeps the drivetrain simple and efficient. The single-chainring setup eliminates the need for front derailleur shifting. Lower gears make climbing gravel gradients easier and more controlled. Overall, the drivetrain delivers a capable combination of simplicity, range and performance.
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The Shimano GRX RX81 1x11-Speed drivetrain had enough range for steep climbs
The Bend R5 uses a full-carbon rigid fork for a lightweight front-end setup. Although it has no suspension travel, the carbon fork helps create a controlled ride feel. Its wide 650×47C tires provide useful cushioning over rough gravel surfaces. The tubeless-ready tires allow riders to choose a suitable tubeless configuration. The stable geometry helps maintain confidence during longer rides. The alloy dropper seatpost adds flexibility when tackling uneven or technical terrain. Together, these features make the Bend R5 comfortable and adaptable for adventure riding.
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The Bend R5 comes in an aesthetic dual shade colour combination with a rugged yet elegant design
The Bend R5 is equipped with Shimano RX810 hydraulic disc brakes. These brakes provide strong stopping power and smooth braking modulation. Hydraulic control is especially useful when riding varied gravel terrain. The carbon rigid fork contributes to predictable steering and front-end control. An Entity Expert alloy handlebar provides a practical gravel-oriented cockpit. The Entity Expert alloy stem completes the bike's controlled front-end setup. Together, these components provide confident steering and braking across changing surfaces.
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The Shimano Hydraulic Disc brakes were powerful and balanced on rough surfaces
The Bend R5 uses 650B wheels with a double-wall alloy wheelset. Its wide 650×47C tires are designed to provide stability on gravel roads. The large tire volume offers additional support over rougher surfaces. The tubeless-ready design provides flexibility for riders seeking a tubeless setup. The Entity saddle provides the primary contact point for the rider. The 27.5-inch wheel format works well with the bike's wide gravel tires. Overall, the wheel and saddle setup supports stability and comfort on longer adventures.
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The Vee Rubber 65x47C tires were fast rolling on rough roads and single tracks
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Quote
The Polygon Bend R5 is a capable gravel bicycle designed for versatility and adventure. Its Shimano GRX 1×11 drivetrain offers a useful combination of simplicity and range. The full-carbon rigid fork keeps the front end lightweight and responsive. Shimano RX810 hydraulic disc brakes provide strong braking control on varied terrain. Wide 650×47C tires add stability and traction on gravel surfaces. The dropper seatpost and carrier-ready frame increase its adventure-focused practicality. Overall, the Bend R5 is a strong option for gravel riding, touring and bikepacking.
Frame
GRAVEL ALX W/ FLATMOUNT, CARRIER READY
Fork
CARBON RIGID FORK W/FLATMOUNT - CARRIER & FENDER READY
Front Derailleur
NO
Rear Derailleur
SHIMANO GRX RD-RX812 SHADOW+
Shifters
SHIMANO GRX ST-RX810, 1x11 SPEED TRIGGER
Brakes
SHIMANO RX810 HYDRAULIC DISC BRAKES
Brake Levers
Shimano RX810
Tires
PERFORMANCE TIRE 650X47C TUBELESS READY
Rims
DOUBLE WALL ALLOY
Handlebar
Entity Expert Alloy
Stem
Entity Expert Alloy
Seatpost
Alloy Dropper
Saddle
Entity
Pedals
N/A
Hubs
N/A
Cassette
SHIMANO SLX CS-M7000 11-42T
Chain
KMC X11-1
Crankset
ALLOY 2-PIECE CRANKSET 38T
Bottom Bracket
THREADED BB
No of Gears
11-Speed
Riding Purpose
Leisure/Fitness