Oval 1x chainring · 104 BCD
ALUGEAR Oval 1X Chainring for 104 BCD 4-Arm Cranks
A 12% oval narrow-wide 1x ring for 104 mm BCD four-arm cranks, sized 40T to 48T for road and gravel gearing. Light, CNC-machined and offered in eight anodised colours.
Highlights
Why we rate it
Fits 104 BCD cranks
Bolts to the common 104 mm four-arm pattern, opening up a huge range of MTB-style and gravel cranks for 1x use.
Narrow-wide teeth
Alternating thick and thin teeth hold the chain securely on a 1x drivetrain, keeping noise down and reducing the risk of dropped chains.
12% oval profile
The ring is effectively smaller through the dead spot and larger through the power phase, helping smooth your pedal stroke on long climbs and rough gravel.
CNC-machined 7075-T6
Milled from high-strength 7075-T6 aluminium and hard-anodised, so the ring resists knocks and wear and keeps its finish.
Best with a clutch mech
For the most secure 1x setup ALUGEAR recommend a clutch rear derailleur and a fresh chain fitted with the new ring.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Shape
- Oval (12% ovality, 108° timing at TDC)
- Mount
- 104 mm BCD (4-arm)
- Tooth range
- 40T–48T
- Tooth profile
- Narrow-wide, 1x only
- Diameter
- 40T 178 mm; 42T 186 mm; 44T 194 mm; 46T 202 mm; 48T 210 mm
- Material
- 7075-T6 aluminium, CNC machined, hard anodised
- Compatible chains
- SRAM and Shimano 10/11/12-speed; KMC
- Fixing
- 6.5 mm chainring bolts and 5 mm nuts (not included)
In the box
- Includes
- 1x chainring
Ordering
Available from The Cycle Collective
Made to order by ALUGEAR. For availability, lead times, sizing or compatibility advice, call 0203 148 6764 or email hello@thecyclecollective.cc.