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- USA
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Ships within 48 hours · Estimated delivery Jun 29 - Jul 4
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For Your Every Summer RSVP, with Code: SUMMER15
Description
carbon fixed gear bike CTRComponent 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 212 Speed Shifters Derailleurs ShunTai 212 Speed Derailleurs Cassette 12 Speed 1132T Freewheel Brakes ShunTai Hydraulic Disc Brakes with 160mm Rotors Crankset Driving Hollow Crankset 170mm 50 34T Rims
| 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. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 123 reviews
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Product Reviews
★★★★★ 5
Would bug again.
I bought this product for my daughters room to put her Legos on. The support poles are actually metal every bit of them. I can see where people were disappointed with the shelves but this one’s I got we’re not bad. I didn’t expect for 120 bucks solid wood shelves. The quality was good I was happy with my purchase. I turned them upside down and attached to the ceiling so it made assembly a little tricky. I like the results. The instructions are like six pictures for the whole thing, very hard to figure out especially when you are turning it upside down.
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Reviewed in the United States on August 8, 2022
★★★★★ 5
Amazing book shelf/ LOOKS GREAT
Very good product, sturdy, easy to install, love it‼️
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Reviewed in the United States on June 21, 2023
★★★★★ 5
A sturdy holder
It’s made well and is versatile. I have the shelf as 2 separate pieces. Perhaps not meant to be separated, I have done so. The pipping pieces are mostly unfixed, so your options are greater as to your personal finish. I recommend greatly.
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Reviewed in the United States on August 5, 2021
★★★★★ 5
Beautiful bargain bookcase
Industrial, discreet but stylish. Looks so good!! Shelves aren’t super high quality but what do you expect??
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Reviewed in the United States on January 25, 2024
★★★★★ 5
Great look and storage space
I've had these shelves for two years now, and still love them. I love the industrial style. They add lots of great storage space for a small apartment. I have two sets - one for the laundry room and the other as a linen closet. Assembly is okay. Make sure you follow the instructions.
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Reviewed in the United States on April 4, 2026