Oval for 104 BCD MTB

Chainring 1-speed narrow-wide Oval for 104 BCD MTB

Size: 32T
Color: Black

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Processing time: up to 10 business days


Shipping time: 2 to 7 business days. Provided by FedEx

  Return Policy

You can return an unused product within 30 days

The original design ALUGEAR chainring.



  • Weight:  32T- 34g; 34T- 42g; 36T- 48g; 38T- 54g

  • Diameter:  32T- 144mm; 34T- 152mm; 36T- 162mm; 38T- 170mm

  • Timing: 108° (top dead center)

  • Ovality: 12%

  • Material: 7075-T6 aluminum

  • Made: CNC milling

  • Surface coating: Anodizing



  • Compatible with all common cranks that have a 104 BCD 4-arm bolt circle diameter

  • 36T - 38T oval chainrings fit for PowerMeters: SRAM Quarq Eagle Spider 104 mm BCD 4-bolts

  • 32T oval chainring has integrated nuts so it cannot be mounted on a PowerMeters

  • 34T oval chainring is not compatible with PowerMeters

  • MTB chainrings you may use the following chains: all 10sp, 11sp, 12sp SRAM (Eagle) and 10sp, 11sp, 12sp Shimano (Hyperglide+), KMC chains



ALUGEAR chainrings are some of the lightest chainrings on the market. Using our experience and vigorous testing, we tweaked the arm design and strategically machined the chainrings so that only minimal sacrifices were made in impact strength in exchange for large gains in weight reduction

The chainrings are CNC machined from 7075 T6 aluminum and hard coat industrially anodized to provide protection from mechanical impacts, a good look, and an excellent tactile feel to each of the chainrings that lasts a long time
A unique tooth profile eliminates chain noise, reduces wear, and provides smooth operation on the entire system of all the most common combinations, such as 10, 11, and 12-speed drives. The Narrow Wide teeth guide the chain reliably

The tooth profile is specially designed for use with MTB chains

ALUGEAR chainrings are the best choice if you are looking for a technologically sound chainring with a unique design and low weight



  • Use Bolts and Nuts for mounting: 5mm Nuts and 6,5mm Bolts are required

  • Tool holder: Nut 6mm and Bolt 5mm hexagon socket, maximum permissible torque: 10 Nm 

  • We recommend using a clutch system rear derailleur for the best chain security

  • It is also a good idea to use a new chain with your new ALUGEAR chainring

  • It is recommended to use a well-lubricated chain on every ride




Data sheet

all cranks with 104 mm standard bolt circle diameter
for 104 BCD

Specific References


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