SRAM MRX Comp
MRX Comp
MRX Comp
MRX Comp
MRX Comp
SRAM

SRAM MRX Comp

In Stock

SRAM MRX Comp GripShift offers light, precise indexed shifting with SRS technology and quick-view gear windows. Designed for 3x8 mountain setups and compatible with Shimano derailleurs.

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Available Options

Option Price Availability
SRAM, MRX Comp, Gripshift shifter Pair, 8sp — In Stock
SRAM, MRX Comp, Gripshift shifter Pair, 7sp — In Stock
SRAM, MRX Comp, Gripshift shifter Pair, 6sp — In Stock
SRAM, MRX Comp, Gripshift shifter, Rear, 8sp — In Stock
SRAM, MRX Comp, Gripshift shifter, Rear, 7sp — In Stock
SRAM, MRX Comp, Gripshift shifter, 6sp Rear Rear — In Stock
SRAM, MRX Comp, Gripshift shifter, 5sp Rear, Shimano compatible — In Stock
SRAM, MRX Comp, Gripshift shifter, 3sp, Front — In Stock

Product Details

Overview & Technology

SRAM MRX Comp is a rugged, user-friendly twist shifter engineered for entry to mid-level mountain bikes. Built around SRAM's SRS indexed technology, the MRX Comp delivers light, positive gear changes across 3x8 drivetrains while the Quick View indicators show both front and rear positions at a glance. The MRX Comp pairs a durable composite housing with a molded rubber grip for secure hand traction in wet and muddy conditions. Internal index mechanisms are optimized for consistent 8-speed spacing and the unit is explicitly compatible with Shimano derailleurs when set up for standard 3x8 indexing.

Key Features & Build

Designed for dependable, everyday performance: the MRX Comp combines precise indexing with a straightforward, serviceable construction. The grip surface uses a textured molded rubber for comfort and control, while the body is formed from reinforced composite to keep weight down and durability up. • SRS indexed system for crisp, repeatable clicks across 8 speeds • Quick View indicators show front and rear gear positions without taking your hands off the bars • Shimano derailleur compatibility — works with standard 3x8 Shimano systems • Available as pairs or single rear units for flexible replacement or upgrades

Fit, Compatibility & Installation

The MRX Comp is intended for mountain bike flat bars and fits standard 22.2 mm handlebar diameters used on most MTB bikes. It’s configured for 3x8 drivetrains (three chainrings up front, eight cogs in the rear) and its index spacing is matched to SRAM 8-speed/compatible Shimano 8-speed derailleurs. Installation is straightforward: clamp the shifter to the bar, route a compatible 1.2–1.5 mm shift cable through quality housing, set cable tension to line up index clicks with the rear cassette, and fine-tune limit screws on the derailleur. Choose the correct variant — pair or rear-only — to match your bike’s setup.

Who the MRX Comp Is For

The MRX Comp is ideal for trail riders, commuters, and budget-minded cyclists who want reliable indexed shifting without complicated electronics or high-end pricing. It’s also a great choice for bike shops, rental fleets, and DIY builders refreshing older 3x8 mountain bikes. Not targeted at top-tier race teams or modern 1x drivetrain setups, the MRX Comp shines where simplicity, durability, and ease of maintenance are priorities.

Key Features

  • ✓ SRS indexed system for light, precise 8-speed shifting
  • ✓ Quick View windows indicate front and rear gear positions
  • ✓ Compatible with Shimano 3x8 derailleurs for flexible setups
  • ✓ Molded rubber grip for secure control in wet conditions
  • ✓ Reinforced composite body balances durability and weight
  • ✓ Available as pair or single rear shifter for easy replacement
  • ✓ Easy clamp-on installation for 22.2 mm MTB handlebars

Specifications

Primary Color Black
Shifter Compatibility SRAM 8 sp.
Speed 3x8

Product Identifiers

Vendor Item # 00.0000.200.645
UPC 510845006452

Frequently Asked Questions

Is the MRX Comp compatible with Shimano derailleurs?

Yes. The MRX Comp is indexed for standard 3x8 spacing and is compatible with Shimano 8-speed derailleurs when properly adjusted. Ensure correct cable tension and limit screw setup for smooth shifting.

Can I use this shifter on drop bars or road bikes?

No. The MRX Comp is designed for flat MTB handlebars (standard 22.2 mm clamp). It’s a twist grip intended for mountain bikes, hybrids, and similar flat-bar setups—not for drop-bar road bikes.

Does the MRX Comp come as a pair or single unit?

Both options are available. Choose a Gripshift shifter pair for full left/right replacement, or select rear-only variants if you only need the right-side shifter. Check the product variant when ordering.

What maintenance does a grip shifter need?

Periodic cable and housing inspection and replacement keep indexed performance crisp. Keep the shifter free of heavy mud and debris; if shifting feels heavy, fresh cables and a light internal spray lube (applied carefully) typically restore smooth operation.

Will this work with 7-speed or 6-speed cassettes?

SRAM produced MRX Comp variants for 6- and 7-speed systems as well. Make sure to select the correct variant for your drivetrain speed — using an 8-speed indexed shifter with 6- or 7-speed spacing will cause mismatched indexing.

What tools do I need to install the MRX Comp?

Basic tools: 4–5 mm hex wrench for clamp bolts, cable cutters for housing and cable, and a screwdriver for derailleur limit screws. A torque wrench is useful to avoid over-tightening the clamp on carbon bars.

Buying Guide

When choosing a twist (GripShift) shifter, match the shifter's speed to your cassette and derailleur — using the correct 6/7/8-speed variant avoids indexing issues. Confirm your handlebar diameter (standard MTB bars are 22.2 mm) and whether you need a left/right pair or just a rear replacement. Prioritize ergonomics and durability: look for a textured rubber grip for control, a robust composite housing for longevity, and proven indexing systems like SRAM's SRS. If you run a modern 1x drivetrain or high-performance 11–12 speed system, consider compatible trigger shifters instead.

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