Derailleur Reviews

Derailleurs are one of the most complex components on a mountain bike. The derailleur "derails" the chain, allowing the rider to shift the chain from gear to gear by use of the handlebar-mounted shifters.

While front derailleurs are beginning to fall out of use thanks to the increasing popularity of SRAM's 1x11 drivetrain and other 1-by conversions, many mountain bikes still feature front derailleurs. The front derailleur changes the front chain ring gears.

The rear derailleur is a point of constant refinement in the mountain bike industry. In recent years, perhaps the most important advancement is the proliferation of clutch-style derailleurs. The "clutch" puts additional tension on the chain, which consequently helps reduce chain slap and keeps the chain from jumping into the incorrect gear.

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* No Front Derailleur Avid Rollamajig None N/A North Shore Billet Precision CNC Machined Derailleur Hangers RD-M786 (XT Shadow Plus )
Shimano 105 Shimano 105 Short cage rear derailleur Shimano Acera Shimano Acera FD M360 Triple Front Derailleur Shimano Acera M360 7-8 Speed Rear Mech
Shimano Alivio Shimano Alivio FD-M412 Shimano Alivio FD-M413 Shimano Altus FD-M191 Mountain Front Derailleur - 7sp Shimano Altus Mountain Bike Rear Derailleur - Direct Mount - RDM310
Shimano Deore FD-M531 Shimano Deore Front Derailleur Shimano Deore LX m581 FD Shimano Deore RD-M591 Shimano Deore Rear Derailleur 9 Speed
Shimano Deore XT FD 770 top pull Shimano Deore XT M-771 Front Derailleur Shimano Deore XT M-772 SGS SHADOW Shimano Deore XT M780 Shadow Shimano Deore XT M786 Shadow Plus
Shimano Deore XT RD-M772 Shimano Deore XT Shadow Plus Shimano Deore XT, direct mount Shimano FD-CO50 Shimano M-580 LX
Shimano M611 (Deore) 10 spd Shimano M675 SGS (SLX) Shadow Plus (Rear) Shimano M985 Shimano RD XT M781 Shimano Saint M810
Shimano Saint RD-M820 Shimano Shimano Acera SGS 8spd Shimano Shimano Altus dual pull, top swing, 34.9 Shimano Shimano Altus RD-M370 Shimano Shimano Deore XT RD-M786 SGS Shadow
Shimano Shimano FD-M190 Shimano Shimano RD M781 Shimano Shimano XT M770 E-Type 9sp Front Mech Shimano Shimano XT M786 GS Shadow Shimano SIS
Shimano SLX Dyna-Sys - FD-M671 Shimano SLX FD-M660 Shimano SLX FD-M661-10 Front Derailleur Gray, Dual Pull, Down Swing Shimano SLX M662 Shimano SLX RD-M662-GS
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