Absolute Black Oval Road Chainring, 2x 110/4 BCD & 5 Bolts FSA ABS

Absolute BLACK Premium Oval chainrings for FSA ABS (asymmetric bolt spacing) cranks like Gossamer, SL-K. This model fits 4 and 5 bolt design FSA cranks. 4&5 bolt cranks are identical except for the one hidden bolt behind the crank arm in 5 bolt design which is not needed. These are the finest FSA-compatible chainrings on the market in terms of shifting, stiffness, smoothness of pedaling, and manufacturing quality. 10/11/12spd compatible. Di2 Compatible.

Features:

• For Gossamer cranks - use original FSA bolts and spacers. There is nothing else needed to mount these rings
• For SL-K - use original FSA Bolt Covers and bolts that will fit perfectly. There is nothing else needed to mount these rings
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• Ramps on big rings are specially configured for combinations: 50/34, 52/36, 52/38, 53/39T
• If you wish to use other configurations it will also work, but shifting will be slower and may require more "adjustments" of front dérailleur to be acceptable. Also, remember that the front dérailleur can only accept a max 16T difference between 2 chainrings - this is how Shimano and Sram designed them.

How to Mount Absolute Black Oval Chainrings to FSA ABS Cranks
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. An 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 a small chainring. Tighten with original FSA bolts
*For SL-K- place the big ring first on the outer position of the spider, then place a small chainring on the inside of the spider. Use the FSA bolt covers and place them from the front on a big ring (they are all identical). Tighten with original FSA bolts
Tighten all four bolts with a force of about 5-7Nm. Mount your crank back to the bike. You may also need to adjust the front derailleur slightly.
Absolute Black always recommends using a new chain when fitting new chainrings.
When mounting absoluteBLACK 4 bolt chainring on 5 bolt crank, leave the hidden bolt hole empty or patch it with waterproof grease. This hole is not important hence FSA removed it with a new version of cranks.

How to Adjust Front Derailleur with Absluteblack Road Oval Chainrings
To proceed with the adjustment you will need 2mm and 5mm Allen keys.
Troubleshooting:

• If your derailleur over shifts the chain when moving from a small ring to a big ring, it means your "gap" is greater than 2mm when the chain is on a big chainring (see video). You may need to reduce the gap. Your front derailleur may also be too high compared to what is advised in the video. The last thing to check is if your cage is parallel to the big chainring face.
• If your front derailleur is hesitating to shift from the small to the big ring then two issues may be present. The "gap" may be too small (It has to be 2mm - see video) or your cage is not parallel to the big chainring face.

Specifications

• Size (Mass +/-1g): 34T (32g), 36T (33g), 38T (38g), 39T (41g), 50T (115g), 52T (132g), 53T(134g)
• Color: Black only
• Compatibility: FSA ABS (asymmetric bolt spacing) cranks like Gossamer, SL-K. Both 4 and 5-bolt versions. One model fits them all. Di2 Compatible. 10 / 11 / 12spd compatible. ABS cranks only.
• Bolts: For Gossamer - use original FSA bolts and spacers For SL-K - use original FSA Bolt Covers and bolts
• Material & Finish: CNC machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizing
• Ovality: Optimized to each size separately. 34T- 3.5% ; 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 Pending.