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OVAL 104BCD Narrow/Wide Chainring
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Oval 1X 64BCD Premium Chainring improves climbing efficiency and traction
What Our Gearhead® Experts Are Saying:
"This is the right option for riders who need real climbing gears. The smaller oval sizes keep cadence smoother under load and make technical climbs far more manageable."
On steep, slow-speed climbs, drivetrain efficiency is about control rather than raw power, and the Oval 1X 64BCD Premium Chainring is engineered with that reality in mind. We rely on the 26T and 28T sizes for trail and all-mountain builds where traction, balance, and cadence management are critical. The oval shape helps maintain forward momentum when cadence drops and torque demands spike.
Each size features size-specific ovality and timing to reduce dead spots and extend the effective power phase of the pedal stroke. This improves rear-wheel traction on loose or technical climbs while reducing rider fatigue over long ascents. The narrow-wide tooth profile keeps the chain locked in place without a guide, and CNC-machined 7075 aluminum construction ensures stiffness and long-term durability even under sustained low-gear torque.
Built around the 64 BCD mounting interface, the chainring integrates with compatible cranksets that support smaller gearing while maintaining a consistent 46mm chainline. It supports modern 1x drivetrain configurations (excluding Shimano HG+ and SRAM Flat Top chains). This chainring is best suited for riders prioritizing climbing control, smoother cadence, and reliable chain retention on steep, demanding terrain.
Details
- Oval mountain bike chainring for steep and technical terrain
- 26T and 28T sizes optimized for low-range climbing control
- 64 BCD interface for compatible 4-bolt crank spiders
- Narrow-wide tooth profile maintains secure chain retention
- Oval shape smooths cadence and reduces torque spikes
- CNC-machined 7075 aluminum for durability at low weight
- Item #ABC001Y
- Material
- aluminum
- Number of Rings
- 1
- Teeth
- 26t, 28t
- Bolt Circle Diameter
- 64mm
- Connection
- 4-bolt
- Compatible Components
- 4x 104BCD interface
- Manufacturer Part Number
- OV26BK, OV28BK
- Claimed Weight
- [26t] 35g, [28t] 42g