Condensed Answer: A 9-speed chain can technically operate with a 7-speed cassette, but the combination is not recommended as it results in "weird" shifting. The incompatibility is due to the…
Condensed Answer: It's possible to integrate an 11-speed derailleur in an indexed drivetrain with an 8-speed cassette and 8-speed shifter only in the following cases: Option 1: 11-speed Shimano or…
Shimano shifters and an 11-speed Campagnolo cassette are not an ideal combination. If the drivetrain is indexed, the only somewhat viable options are: Shimano 11-speed Road Derailleur + Shimano 11-speed…
Important Terms To understand the factors influencing the compatibility between a derailleur, a shifter, and a cassette, it's necessary to become familiar with the following terms. Indexed Shifters The movement…
Condensed Answer: Shimano 105's 11-speed road cassettes are compatible with the 11-speed Ultegra series (R8000 & 6800). Shimano 105's 10-speed road cassettes are compatible with the 10-speed Ultegra series (6700).…
Ultegra 6870 and Ultegra 8050 are high-end 11-speed road group sets by Shimano. The cable pulls and the rear shift ratios as well as the used technology of both group…
Shifters from the Tiagra 4600 series are compatible with 8 and 9-speed Deore rear derailleurs. The Tiagra 4700 series, however, is incompatible with Deore derailleurs. Rear Shift Ratio and Cable…
An Ultegra R8000 rear derailleur can be combined with 6800 shifters because all of the components are designed for 11-speed road bikes. Consequently, the rear derailleur has the needed rear…
Condensed Answer: Only a 9-speed XT derailleur can operate with Ultegra shifters (10-speed models) by default. If the goal is to use 10 or 11-speed derailleurs, an adapter will be…
Condensed Answer: If the 105 derailleur is designed for the same number of speeds as the Ultegra shifters, they can be combined. If the gears do not match, however, the…