Shimano & Sram shift groups

MTB SHIFT GROUPS IN OVERVIEW

Since the mountain bike came on the market in the 1980s, it has been the driving force behind the technical development of the bicycle. There is no other bicycle with as much technology as the mountain bike. In recent years, the bicycle market has taken a huge surge with e-bikes. E-bikes put a lot more strain on all components, and Shimano like Sram have developed more precise and robust gear sets.

MECHANICAL OR ELECTRIC?

There are two systems for the rear derailleur:

Mechanical shifting: via shift cables

Mechanical shifting is the most common on mountain bikes. By operating the shifting handle, the shift cable is shortened or lengthened, bringing the chain into the desired position.

Electronic shifting: through electronic impulses

In these circuits, the switching impulses are transmitted electronically to the rear derailleur and micromotors provide the necessary movement.

The various models of rear derailleurs

The gear market is large and sometimes confusing. On this page we describe the most common systems for an easier overview of both manufacturers. The order is oriented from the highest quality and also most expensive circuit to cheaper options.What is the difference in price? After all, all circuits fulfill their task. Differences exist in terms of:

Material
Weight
Precision
Smooth running
Number of shifted gears

SRAM GX

The SRAM GX X rear derailleur is designed for smooth, reliable shifting. Very precise and robust on aggressive terrain. Aluminum housing.

X-HORIZON™ design reduces shift force, ghost shifting and cage slap
12-speed drivetrain
Large upper pulley offset automatically adjusts chain gap
Sealed cartridge bearings
Aluminum cage

SRAM NX

The NX Eagle™ offers a smooth ride with direct shifting. Quiet, smooth performance and durability. Aluminum housing.

X-HORIZON™ design reduces shift force, ghost shifting and cage slap
12-speed drivetrain
Large upper pulley offset automatically adjusts chain gap
Aluminum cage

SRAM SX

The SX Eagle derailleur is your entry point to the SRAM Eagle system. Sharing many features with the rest of the Eagle system like the proven SRAM X-HORIZON™ body design. Composite housing.

A full featured Eagle derailleur
12-speed drivetrain
X-SYNC™ pulley technology provides greater efficiency
Crisper shifting, and quieter operation
Composite cage

SHIMANO DEORE XT

The all-new SHIMANO DEORE XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Aluminum housing.

Fast and precise shifting performance
Faster and shockless shifting
HYPERGLIDE+
12-speed drivetrain
Silent drivetrain in all gear positions
Decreased rear derailleur and chain tension in low gear
Bump Stopper
Stable drivetrain on rough terrain

SHIMANO SLX

The SLX M7100 series of derailleurs deliver advanced shifting performance with decreased tension in the low gear position and an added bumper on the pulley cage. Aluminum housing.

Fast and shockless shifting
HYPERGLIDE+
12-speed drivetrain
Silent drivetrain in all gear positions
Decreased rear derailleur and chain tension in low gear
Bumper structure at rear derailleur pulley cage reduces impact shock by absorbing chain impact on aggressive terrain

SHIMANO DEORE

The all-new SHIMANO DEORE M6100 rear derailleurs deliver advanced shifting performance with decreased tension in the low gear position. Aluminum housing.

11 or 12-speed drivetrain
Fast and precise shifting
Silent drivetrain in all gear positions
Decreased rear derailleur and chain tension in low gear
Stable drivetrain in rough terrain
Chain stabilizer reduces chain drop, slap and noise