Oval 1x chainring · Hollowgram
ALUGEAR Oval 1X Chainring for Cannondale Hollowgram
A 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.
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
- 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.
Product Information
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Close all zippers before washing
Wash at max 30°C
Hand washing with cold water (or gentle wash cycle)Using mild, high quality detergent
Drip drying in shade, do not machine dry
Avoiding ironing and bleachThe instructions on your garment’s label
Sorting your clothing by color
Avoiding fabric softener.
Our clothing isn’t meant to be dry cleaned and soaking clothing is not ideal
Storage
Unused sealed sachets should be stored inside the box in a well-ventilated, dry place and protected from moisture, heat and direct sunlight. Can be stored for up to 3 years.
Size
Each sachet contains 30g powder.2 x 30g sachets per carton box.
Makes 2x litres of bike cleaner
100% plastic free packaging
Readily biodegradable ingredients
100% water free
Refill your old bottle and help reduce plastic waste
92% saving in packaging compared to 2 x 1L bike cleaner
100% environmentally friendly ingredients, including plant based raw materials
Supplied in a compostable sachet and printed with vegetable inks
FSC recycled card box containing 2 x sachets – that makes 2L of bike cleaner
Safe on all parts and surfaces including carbon fibre
Will not harm seals, cables, disc brake pads or rotors
Alkaline based and free from alcohol, CFCs, EDTA, solvents or acids
Vegan & vegetarian friendlyCruelty free, not tested on animals
Sachet Instructions
1. Grab your empty old bottle of Muc-Off. (You may need a pair of adjustable pliers to remove the trigger from the bottle). Or purchase our Bottle for Life.
2. Fill up to the shoulders of the bottle with 1 litre of lukewarm water for faster formula activation!
3. Carefully cut one corner of the sachet open along the diagonal cut lines.
4. You can carefully pour the sachet straight into the top of the bottle. Or using the box, fold the inside of the lid together using the printed lines as a guide and use this as a funnel to pour the powder into your bottle. (Please see our video for full instructions on this.
5. Screw your spray trigger back onto the top of the bottle. Ensure it’s tight!
6. Shake the bottle vigorously for 30-60 seconds to activate the formula. If you notice any undissolved powder simply keep shakin’ it!
7. Go clean that filthy bike!
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