Bonzai Marlin GRS100 - Text Review

The Marlin GRS100 uses an Aluminium 6061 frame with internal cable routing for a clean and modern appearance. The frame is also dropper-post ready, giving riders additional customization potential. Its geometry is designed around comfortable all-terrain riding rather than aggressive racing. Bonzai offers the bike in multiple frame sizes from S through XL. The 700C wheel platform provides efficient rolling while maintaining stability on mixed surfaces. Overall, the design combines practical commuting features with a sporty gravel-inspired character.

The GRS100 uses a Shimano Deore M4100 1×10-speed drivetrain for straightforward gear control. Its Shimano Deore M4120 rear derailleur provides smooth shifting across the 10-speed cassette. The Marlin G3 alloy crank uses a 38T narrow-wide chainring to help reduce chain drops. The Shimano Deore 11-42T cassette offers a broad range for both climbing and faster road sections. The KMC X10 chain completes the drivetrain with a dependable 10-speed setup. This combination makes the bike suitable for commuting, fitness rides and gravel routes.

Comfort comes from the combination of the suspension fork, wider tires and practical hybrid geometry. The SR Suntour NEX HLO fork provides 63mm of travel to absorb bumps and vibrations. Its hydraulic lockout allows the fork to be locked when a firmer setup is preferred on smooth roads. The 700×40C tires provide additional cushioning compared with narrower road tires. Ergonomic lock-on grips also improve comfort and control during longer rides. Together, these features make the GRS100 well suited to mixed-surface riding.

The GRS100 uses Tektro M275 hydraulic disc brakes with 160mm rotors at both ends. Hydraulic braking provides strong stopping power and smooth modulation across different riding conditions. The alloy handlebar offers a stable steering position suited to both city and gravel riding. The alloy stem provides a solid connection between the handlebar and front end. A Neco threadless integrated headset supports smooth and controlled steering. Overall, the cockpit and braking system provide confidence across varied surfaces.

The Marlin GRS100 rolls on 700C double-wall alloy rims with Kenda K1083A 700×40C tires. The wider tires provide a useful combination of grip, stability and low rolling resistance. Alloy sealed-bearing hubs with quick release add smooth operation and practical wheel removal. The 700C wheel size maintains efficient rolling on paved roads while remaining capable on gravel. The PU foam saddle with vinyl cover and ABS protection plate provides a practical seating setup. Overall, the wheel and saddle package suits long city rides and light gravel adventures.