STONE 144bcd 60T-72T Fixed Gear Chainring 5mm thickness enhanced AL7075 T651 CNC Anodized Track Bike fixie Single Speed Chainwheel 1/8 Chain
Upgrade your riding performance with the STONE BCD144 Fixed Gear Chainring, designed for track bikes, fixed gear bikes, and high-power riding. Made from high-strength AL7075-T651 aluminum alloy, this chainring offers excellent stiffness, durability, and precision for professional riders.
The 5mm thick structure provides strong lateral rigidity, helping deliver efficient power transfer during sprinting and high-intensity riding. CNC machining and anodized surface treatment ensure a premium finish, improved wear resistance, and long-lasting corrosion protection.
Key Features
- Brand: STONE / STONEDW
- Model: BCD144W5
- BCD: 144mm
- Bolt Holes: 5-bolt design
- Material: AL7075-T651 aluminum alloy
- Thickness: 5mm enhanced for high power riders ( as compare the ordinary version 144BCD is 4mm thickness)
- Process: CNC machined
- Surface Treatment: Anodized black
- Chain Compatibility: Single speed chain only
- Chain Requirement: 1/2″ x 1/8″
- Application: Fixed gear bike / track bike
- Teeth Options: 60T-72T
Teeth Size Options
| Teeth | Outer Diameter | Weight | SKU |
|---|---|---|---|
| 60T | 249mm | 222.3g | BCD144-60T-W5 |
| 61T | 252.7mm | 230.2g | BCD144-61T-W5 |
| 62T | 257mm | 238.2g | BCD144-62T-W5 |
| 63T | 261mm | 246.9g | BCD144-63T-W5 |
| 64T | 265mm | 255.9g | BCD144-64T-W5 |
| 65T | 269mm | 276.5g | BCD144-65T-W5 |
| 66T | 273mm | 285.3g | BCD144-66T-W5 |
| 67T | 277mm | 300g | BCD144-67T-W5 |
| 68T | 281mm | 308.6g | BCD144-68T-W5 |
| 69T | 285mm | 318.5g | BCD144-69T-W5 |
| 70T | 289mm | 327.8g | BCD144-70T-W5 |
| 71T | 293mm | 340.2g | BCD144-71T-W5 |
| 72T | 297mm | 349.8g | BCD144-72T-W5 |
Product Advantages
High-Strength AL7075-T651 Aluminum
Made from premium 7075-T651 aluminum alloy, offering high strength, high hardness, and excellent durability.
5mm Thick Design
The thicker chainring body improves lateral stiffness and supports powerful pedaling output, suitable for professional track riders.
CNC Precision Machining
High-precision CNC processing ensures accurate tooth shape, smooth chain engagement, and stable riding performance.
Anodized Surface Finish
The anodized black coating helps prevent oxidation, corrosion, and wear while giving the chainring a premium appearance.
Chamfered Tooth Design
The outer tooth edge features a chamfered design to reduce chain noise and improve chain contact.
Improved Flatness Accuracy
Factory flatness tolerance is controlled within 0.3mm, helping reduce wobble and improve drivetrain smoothness.
Fatigue Tested
Designed with structural optimization and tested according to GB/T 3565.8-2022, passing fatigue testing at 1800N for 100,000 cycles.
Compatibility Notice
- This chainring is designed for BCD144 5-arm cranksets.
- Suitable for fixed gear bikes and track bikes.
- Only compatible with single speed chains.
- Required chain size: 1/2″ x 1/8″.
- Not compatible with multi-speed chains.
- Large tooth sizes may not fit all bike frames. Please check frame clearance before purchase.
Package Includes
- 1 × STONE BCD144 Chainring
- 5 x steel bolts
