Absolute Black Premium Road Oval FSA 110/4/5 Chainring (ABS K-Force, SLK) - Black 2022

Absolute Black Premium Premium FSA oval chainrings are designed for 110/4 and 110/5 bolts cranks like ABS K-Force, SLK and Gossamer. This model fits all 4 and 5 bolt design cranks. 4&5 bolt cranks are identical except the one hidden bolt behind the crank arm in 5 bolt design which is not needed. These are finest shift-able oval chainrings on the market

Features

• Material & Finish : cnc machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizing
• Compatibility : FSA Cranks like ABS K-Force, SLK and Gossamer
• Ovality : Optimized to each size separately. 34T- 3.5% ; 36T, 38T and 39T- 11.4%; 50/52/53 - 10 - 11,2%
• Timing of 108 -110.5° after TDC (top dead center)
• Ideal for climbing. Patent Pending
• BOLTS
    - For Gossamer - use original FSA bolts and spacers
    - For SL-K - use original FSA Bolt Covers and bolts
    - For K-Force - purchase absoluteBLACK bolt covers (necessary)
• Ramps on big rings are specially configured for combinations: 50/34, 52/36, 52/38, 53/39T
• Colour : Black

Weight : 34T (32g), 50T (115g)

Advantages of Absolute Black 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 AbsoluteBlack 6 point ramp and recess shifting design shifts better than any other brand and model of oval chainring
• 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%

Installation steps

• First, you need to remove your crank from your bike. Once removed, unscrew the 4 bolts that hold two chainrings together with a T-30 torx key. Remove both original rings.
• Asymmetric bolt design will prevent mounting the rings with the wrong orientation. The bolt holes on the small chainring are recessed – so the bolt heads will sit flush with the surface of the chainring - these recesses should face you when mounting the bolts
• For Gossamer - place the big ring first on the spider, then place 4 FSA spacers and then small chainring. Tighten with original FSA bolts
• For SL-K- place the big ring first on the outer position of the spider, then place small chainring on the inside of the spider. Use the FSA bolt covers and place them from the front on big ring (they are all identical). Tighten with original FSA bolts
• For K-Force Light- place the big ring first on the outer position of the spider, then place small chainring on the inside of the spider. Use absoluteBLACK bolt covers and place them from the front on big ring. Tighten with provided bolts while holding the bolt covers by hand from the other side (this is important to not to damage the bolt covers).
• Tighten all four bolts with force of about 5-7Nm.
• Mount your crank back to the bike. You may also need to adjust the front derailleur upwards by 2-3mm.

Why Absolute Black oval chainrings work

Absolute Black 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'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'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 Absolute Black oval chainrings matters

Absolute 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.

Front derailleur adjust