OVAL direct mount chainring for Shimano 12spd - PVD RAINBOW
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The Original one and only absoluteBLACK Premium Shimano 12spd Hyperglide+ compatible Direct mount 1X Oval chainrings in PVD Rainbow (oil slick) colour. Designed for XTR M9100, XT M8100, SLX M7100 & Deore M6100 cranks. Super smooth pedaling experience. This chainring is specifically designed to work with CN-M9100, 8100, 7100 & 6100 Shimano 12spd Hyperglide+ chain due to different thickness of the teeth. This special PVD Rainbow Titanium coating process makes the chainrings very durable and incredibly beautiful. It is the most Premium oval chainring on the market with scientifically proven performance gains.
NOTE: Due to the nature of PVD process, every chainring is unique and color may vary. Not a single chainring is the same which makes your new ring completely individual. You can indicate to us, in comments section during the checkout, if you prefer more gold-purple or more blue/green-purple, but we can not guarantee to meet your request.
You can also check the same chainring in Anodized colors here.
" The oval rings continue to impress me and have made a genuine difference to my riding particularly as suffer from osteoarthritis in both knees. There does not seem to be as much stress on my knees and they don't ache when I have completed my rides. I am super impressed!"
" I had my AB chainring installed last week and after few hours of pedaling, boom, it hit me. This chainring made a big difference. My knees didn’t hurt, I felt faster on flats and uphill. "
" I’ll never go back to round. Super smooth, eased my knee pain, and has helped my climbs on technical ascents ten fold."
" Initially, reluctant. However, after riding my 29er I was very impressed with the power distribution and no knee pain. AB undoubtable got it nailed. You won't even know your are riding an OVAL after 15 minutes time."
" Super pleased with the overall look and performance of the chainring. I can 100% say that it does improve my pedaling while climbing and getting through rough uphill stuff. Each pedal stroke is now more fluid and cadence is better on those longer climbs."
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Size (Mass +/-1g): |
28T (49g), 30T (54g), 32T (60g), 34T (65g), 36T (69g) |
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Color |
PVD Rainbow (oil slick) |
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Compatibility |
Fits to Shimano XTR M9100 , M9120, M9125, M9130, XT M8100, M8120, M8130 , SLX M7100, M7120, M7130, Deore M6100, M6120, M6130 & FC-MT900 cranksets. Works ONLY with CN-M9100, 8100, 7100 & 6100 Shimano 12spd Hyperglide+ chain. |
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Material |
cnc machined 7075 Txxx Aluminum. Long-lasting construction. Physical Vapour Deposition |
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Chainline |
Dependent on the crank model. Every crank model has different axle length, but same chainrings. |
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Ovality |
Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending |
It's a Direct Mount chainring so please use original lockring to mount it on the crank. Always use a new chain with a new chainring
If you wish to check for frame clearance with new oval ring, below you can find measurement of biggest dimension of the oval (tip to tip of tooth):
28T: 127mm ; 30T: 134mm ; 32T: 143mm ; 34T: 151mm
Advantages of our special oval chainrings for Shimano 12spd :
*We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape.
*Finest design to provide excellent weight to strength ratio
*One of a kind special oval shape (Patent Pending)
*Greatly improves traction and climbing abilities
*Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months!
*Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically
*All rings have built in threads for easy of mounting and reduction in weight
*Superb quality and great look.
*You will ride faster using ovals. If you keep using round ring then others will get quicker.
*You will not "feel" the oval shape at all
*Reduces stress on knees
How to mount Absoluteblack oval chainring to Shimano 12spd Hyperglide+ crank:
Using Hollowtech II BB Removal Tool (like BBB BTL-116 ), carefully open the lockring that holds the chainring on the crank(normal threads). Once the lockring is removed, take off old chainring, re-grease the splines on the crank. Place new oval chainring with convex side to the crank. Chainring/crank has special splines that only fit one way. Close the lockring to 35-50Nm of force. Chainring is only compatible with CN-M9100, M8100, M7100 & M6100 Shimano 12spd Hyperglide+ chains. Using other chains may cause chain to drop very easily from the chainring due to thinner than usual teeth.
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.
Ovality of the chainring is in range of 10-14% (dependent on size) and feels perfectly round when riding. 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.
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Chain options |
12spd xtr9100, 8100, 7100 & 6100 Shimano 12spd Hyperglide+ chain only |
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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. |
Designed in UK. Manufactured in Poland (EU). The World's best oval chainrings for Shimano.
The most advanced, Patent Pending narrow/wide tooth profile ever produced, guarantee minimum 12 months of excellent chain retention capabilities! We mean it. Always use a new chain with a new chainring.