| Management number | 235380262 | Release Date | 2026/07/02 | List Price | US$33.60 | Model Number | 235380262 | ||
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Premium 1X Sram Direct-mount Oval Boost148 compatible traction chainrings. Fits SRAM and other Boost148 cranks. Also replaces 76bcd chainrings to convert to a direct-mount design.
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Size (Mass +/-1g): |
28T (50g), 30T (55g), 32T (59g), 34T(66g) |
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Color |
Oval: Black, Green, Gold, Red Round: Black |
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Compatibility |
Compatible with Boost148 Style cranks/bikes |
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Material |
CNC machined 7075 Txxx Aluminum. |
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Finish |
type II anodizing |
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Chainline |
50mm |
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Ovality |
Optimized per individual chainring size. Range: 10.2-14.4% and Timing of 110.5-116.3 after TDC (top dead center) Patent Pending |
Advantages of our direct-mount oval chainrings:
You need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this chainring to Sram crank, so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.
Check below which Sram compatible oval narrow wide chainring you will require for your Sram crank type. All Sram Cranks have exactly same mounting interface regardless the model or axle type. The only thing you need to determine is chainring offset.
It is ideal for 1x 9/10/11/12 system and Singlespeeds!. Oval (elliptical) chainring does not compromise the work of clutch mechanism in rear derailleur(video at the bottom). It also does not require chain tensioner when using in singlespeed application. Riding out of saddle on the uphill will become more pleasant. These chainrings also help you to recover after knee injuries as pedaling becomes smoother and less exhausting. It is the most advanced oval chainring currently on the market.
The most advanced, Patent Pending alternate wide and narrow teeth profile currently produced, guarantee minimum 12 months of excellent chain retention capabilities! We mean it. Always use a new chain with a new chainring.
The World's best oval (elliptical) mtb spiderless traction chainring - period!. Non circular chainrings, Non-round chainrings. Asymmetrical chainrings.
Designed in UK. Manufactured in Poland (EU).
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Chain options |
10, 11 or 12spd chain for geared bike or 6-8 spd for SS. If used in 1x9 drivetrain - 10spd chain must be used to obtain the performance. (yes - 10spd chain will work great on 9spd cassette) |
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Chainguide needed? |
No. But if you want one then chain guide should have 2 teeth more capacity than nominal oval ring size. |
OVAL rings - unfair advantage in singlespeed? MTBR forum reviews.
oval rings bikerumor
Absolute Black Ovalized Wide Narrow Chainrings - bikerumor
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