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CTR - Carbon Fiber Road Bike-Glossy Black

kit: 105
size: XS
DESCRIPTION
Component Specification
Frame ROCKBROS 700C Carbon Fiber Frame
Front Fork ROCKBROS Carbon Fiber Fork
Handlebar Integrated Carbon Fiber Aero Handlebar
Stem Integrated Carbon Fiber Aero Stem
Saddle DDK Saddle
Seatpost Carbon Fiber Seatpost
Shifters ShunTai 2×12-Speed Shifters
Derailleurs ShunTai 2×12-Speed Derailleurs
Cassette 12-Speed 11–32T Freewheel
Brakes ShunTai Hydraulic Disc Brakes with 160mm Rotors
Crankset Driving Hollow Crankset 170mm × 50/34T
Rims 700C Carbon Fiber Rims, 40mm Depth
Hubs Aluminum Alloy Sealed Bearing Hubs
Spokes 14G High-Carbon Steel with Brass Nipples
Tires Innova 700C × 28C F/V Tires
Weight ≈ 8.98 kg (M Size)

CTR ShunTai vs CTR Shimano 105 — Shifting & Braking System Comparison

Feature CTR ShunTai Version (2×12 Speed) CTR Shimano 105 Version (2×12 Speed)
Shifters ShunTai integrated hydraulic shifters with a slightly heavier, mechanical feel. Shifting travel is longer but crisp and reliable. Shimano 105 R7120/R7170 dual control levers with refined ergonomics. Smooth, light, and highly precise shifting response.
Shifting Mechanism Traditional cable-actuated system, with minor delay between front and rear derailleurs. Advanced Shimano mechanical or electronic system (depending on setup) for faster, more accurate gear changes.
Brake Type ShunTai hydraulic disc brakes using mineral oil. Strong braking power but firmer lever feel. Shimano 105 hydraulic disc brakes with mineral oil. Smooth, linear braking power with excellent modulation and heat control.
Brake Calipers Aluminum dual-piston design, simple and easy to maintain. Shimano BR-R7170 (or similar) dual-piston calipers with high heat dissipation and consistent braking.
Brake Pads & Hoses Uses standard mineral oil and compatible aftermarket pads. Shimano original mineral oil and pads, offering longer lifespan and higher compatibility.
Maintenance Easy and low-cost maintenance. Longer service life but higher maintenance cost.
Riding Feel Suitable for daily commuting and entry-level riders. Ideal for intermediate to advanced riders seeking superior shifting and braking control.
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Since 2005, we have continued to build our expertise, strengthen our brand, and create meaningful experiences for riders around the world. We are proud of every milestone along the journey.As we look ahead, ROCKBROS will continue to write new chapters on the global cycling stage. We believe life is better when shared with cycling — more connected, more active, and more inspiring.

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