Oval AERO 1x chainring · Hollowgram
ALUGEAR Oval 1X AERO Chainring for Cannondale Hollowgram
A lightweight AERO-machined 12% oval narrow-wide single ring that mounts directly to Cannondale Hollowgram Si, SiSL and SiSL2 cranks. Choose from 36T to 52T for road or gravel gearing.
Highlights
Why we rate it
Direct mount for Hollowgram
Fits Cannondale Hollowgram Si, SiSL and SiSL2 cranksets directly, for a tidy single-ring setup.
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.
AERO lightweight design
Slim, heavily machined arms strip out weight while ALUGEAR's testing keeps impact strength where it matters.
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.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Shape
- Oval (12% ovality, 108° timing at TDC)
- Mount
- Cannondale Hollowgram direct mount (Si, SiSL, SiSL2)
- Tooth range
- 36T–52T
- Tooth profile
- Narrow-wide, 1x only
- Offset
- -2.0 mm
- Weight
- 36T 71 g; 38T 77 g; 40T 82 g; 42T 90 g; 44T 97 g; 46T 104 g; 48T 112 g; 50T 119 g; 52T 126 g
- Diameter
- 36T 162 mm; 38T 170 mm; 40T 178 mm; 42T 186 mm; 44T 194 mm; 46T 202 mm; 48T 210 mm; 50T 218 mm; 52T 226 mm
- Material
- 7075-T6 aluminium, CNC machined, anodised
- Compatible chains
- SRAM and Shimano 10/11/12-speed
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.