AbsoluteBLACK oval 110bcd 4 bolt 2x asymmetric shimano 9100/8000

Name: Absoluteblack oval 110bcd 4 bolt 2x asymmetric shimano 9100/8000
Brand: absoluteBLACK
SKU: 26847959463
Price: 52.99 GBP
Availability: InStock
Rating: 3 (1 reviews)

3 stars, based on 1 votes

AbsoluteBLACK Premium Shimano 110
4 bcd compatible oval chainrings are designed for new type of Shimano cranks Dura-Ace 9100 & Ultegra 8000 only
These are finest oval chainrings on the market in terms of shifting
Smoothness of pedaling and manufacturing quality
(They can be also retrofitted to 9000 and 6800 cranks)
Size (Mass +
-1g):34T (31g)
36T (37g)
38T (41g)
39T (42g)

1g	34T 31g 36T 37g 38T 41g 39T 42g 50T 120g 52T 137g
53T 139g Compatibility	Shimano Dura Ace 9100 R9150 Di2 and Ultegra 8000 R8050 Di2 They can also retrofit 9000 and 6800 cranks but use bolt covers for best
Appearance Bolts	For Outer chainring please order Long bolts from us OR Bolt CoversChanging Inner chainring to oval only use original boltsMaterial
Finis	CNC machined 7075 Txxx Aluminum Long lasting construction Type II
AnodizingOvality	Optimized to each size separately 34T 6 5 36T 38T 39T 11 4 50 52 53T 10 11 2 Timing of 108 110 5 after TDC top dead center Ideal for road climbing Patent PendingIMPORTANTRamps on big rings are specially configured for
Combinations	50 34 52 36 52 38 53 39T If you wish to use other configuration it will also work but shifting will be slower and may require more adjustments of front dérailleur to be acceptable Also remember that front dérailleur can only accept max 16T difference between 2 chainrings this is how Shimano and Sram designed them Advantages of Absolute Black Road Oval
Chainrings	One of a kind special oval shape that helps you climb easier and faster Patent Pending Over 15 stiffer than Rotor Qrings due to thicker 5mm construction Bespoke Absolute Black 6 point ramp and recess shifting design shifts better than any other brand and model of oval chainring Finest design that provides excellent strength to weight ratio You will not feel the oval shape while pedaling Your pedaling action will feel smoother Helps reduce stress on knees and helping your legs remain fresher for longer You will be able to maintain better cadence while climbing Reduces possibility of leg cramps You will reduce chainring cog shifts by at least 15 What size should I choose 34T inner chainring should be used with 50T outer ring It has 6 5 ovality Use a 34T to help with spinning higher cadence and hilly terrain 36T inner chainring can be used with 50 or 52T outer ring It has 11 4 ovality Use a 36T if you re a strong rider or for rolling terrain 38T inner chainring should be used with 52T outer ring It has 11 4 ovality Use a 38T if you re a very strong rider or for flat terrain 39T inner chainring should be used with 53T outer ring It has 11 ovality Use a 39T if you re a very strong rider or for flat terrain 50T outer chainring Choose this size if you ride for pleasure or sportive events This is the most versatile and comfortable size 52T outer chainring if you race and feel strong it 39 s the classic outer chainring size and a great option for experienced riders 53T outer chainring if you race and feel very strong it 39 s the classic outer chainring size and a great option for powerful riders Remember when selecting your chainring sizes it 39 s not about what others use but about ensuring YOUR ability to maintain a comfortable and effective cadence across the terrain you ride most often If you ride chainrings that are too large round or oval your cadence will be lower This can affect your performance by prematurely tiring your legs and possibly lead to stress injury in your knee joints Shifting quality and technologyBoth inner and outer oval chainrings are optimized with smooth shifting in mind This is why the back of the Absolute Black Oval road chainring does not feature cutouts like other oval products on the market Instead we design smooth angled surfaces to help chain to slide quickly and precisely between chainrings Absolute Black outer oval chainrings have 6 up shifting ramps for easy and quick gear change even under load Each outer chainring also features 12 down shifting points Instead of steel shifting pins we use a CNC machined ramp and recess solution Special raised ramps work in conjunction with the tooth recesses to stabilize the chain when shifting Our oval chainrings DO NOT require any modification to the front dérailleur in order to work properly apart from small standard adjustment Why our oval chainrings workOur premium Oval chainrings work because riders do not produce power evenly through a pedal stroke the musculature of human legs makes it difficult to maintain an even power delivery to a round chainring Believe it or not but a round chainring doesn 39 t transfer torque to your rear wheel as smoothly as an Oval one Oval rings work with the natural human physiology Oval chainrings maximize the part of the stroke where power is produced and minimize resistance where it isn 39 t As a direct consequence Oval rings enhance a cyclist s ability to spin with a smoother power delivery and feel easier on legs while climbing You will actually feel your pedal stroke to be more round with an Oval chainring than with a round chainring Why using AbsoluteBlack oval chainrings mattersAbsolute Black oval road chainrings deliver power more smoothly to your rear wheel This means you are better able to generate and maintain constant cadence Because oval chainrings reduce the peak loads on knee joints riders using them get less stress on the joints knees and therefore are able to keep certain level of effort for longer This results in higher average speed You don t need to take our word at Absolute Black 11 scientific studies by leading universities around the globe show that in comparison to round chainrings when using oval chainrings human legs utilize more muscle groups but each of them to lesser degree The overall Load from pedalling an oval chainring is spread over greater muscle mass This has three key benefits firstly it gives you the feeling of fresher and more relaxed legs Secondly it allows you to achieve higher average speed riding uphill Thirdly spreading the pedalling load over more muscles reduces the risk of cramp even when riding hard The compound effect of switching to oval chainrings the relaxed legs added climbing ability and reduction of cramp means your overall enjoyment of the ride is enhanced Why our Oval chainrings do not have adjustable timingAt Absolute Black we have extensively studied the relevant performance data regarding the optimum percentage of ovality shape and critically the timing of the oval the positioning of the high and low points of the oval in relation to the position of the crank arm and focus this into one single mounting position this is the really important part of what makes Absolute Black Oval chainrings so effective By simplifying our oval chainring design to reflect a single high performance sweet spot we are able to make the process of fitting Absolute Black oval chainrings faster and easier as well as making our rings even lighter

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