SRAM Red 2012
Red 2012
SRAM

SRAM Red 2012

In Stock

Ultra-light 145g SRAM Red 2012 rear derailleur delivers crisp Exact Actuation shifting, Aeroglide pulleys with BlackBox hybrid ceramic bearings, and short or WiFli medium cage options for 10-speed road setups.

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Available Options

Option Price Availability
SRAM, Red 2012, Rear derailleur, 10sp, WiFli, Medium cage — In Stock
SRAM, Red 2012, Rear derailleur, 10sp, Short cage — Out of Stock

Product Details

Overview & Technology

SRAM Red 2012 is a high-performance 10-speed rear derailleur engineered for road racers and weight-conscious riders. At just 145g, it pairs SRAM's Exact Actuation shifting with Aeroglide pulley geometry and BlackBox hybrid ceramic bearings to reduce friction and sharpen shift response under load. The unit uses a precision alloy chassis and CNC-finished components to keep weight low while retaining stiffness where it matters. Aeroglide pulleys are sculpted for smoother chain flow, and the BlackBox hybrid ceramic bearings lower rotational drag for crisper, more consistent performance over long rides.

Key Features & Performance

Exact Actuation provides accurate, repeatable shifts across the 10-speed cassette — less fiddling, more time riding. The BlackBox hybrid ceramic bearings in the Aeroglide pulleys reduce friction and help maintain momentum between pedal strokes, most noticeable on fast group rides and long climbs. This derailleur supports a maximum cog of 28T in the short-cage version and up to 32T with the WiFli medium cage, with a total capacity of 31T. The short-cage option is perfect for tight race-oriented setups, while the WiFli medium cage gives more versatility for bigger cassettes.

Fit, Compatibility & Installation

The Red 2012 rear derailleur is a standard hanger mount unit designed for SRAM 10-speed road groups using Exact Actuation. It accepts cassettes with a minimum cog of 11T and a maximum cog depending on cage choice: 28T (short) or 32T (WiFli medium). Total derailleur capacity is 31T, so pairing must account for chainring difference. Installation is straightforward for any mechanic familiar with modern road derailleurs: hanger alignment, B-tension, and limit screw set-up are the primary adjustments. Keep in mind it is built specifically for 10-speed SRAM road systems and is not compatible with 11/12-speed SRAM or Shimano 10-speed indexing.

Who It's For

This derailleur is aimed at road racers, weight-conscious climbers, and weekend warriors running a 10-speed SRAM groupset who want top-tier shifting and minimal drivetrain drag. Choose the short cage for lightweight, race-focused builds; pick the WiFli medium cage if you want a wider gearing range for hilly or mixed-terrain rides. It’s also a great upgrade for restoring or maintaining high-performance 10-speed race bikes — whether you're refurbishing a classic build or squeezing every gram and watt for competition.

Key Features

  • ✓ Ultra-light 145 g rear derailleur for 10-speed road drivetrains
  • ✓ SRAM Exact Actuation for precise, repeatable shifting under load
  • ✓ Aeroglide pulleys shaped for smoother chain flow and reduced drag
  • ✓ BlackBox hybrid ceramic bearings lower pulley rotational friction
  • ✓ Short cage (28T max) or WiFli medium cage (32T max) available
  • ✓ 31T total capacity, compatible with 11–28T or 11–32T cassette ranges
  • ✓ Standard hanger mount, designed for SRAM 10-speed road shifters

Specifications

Maximum Cog 28T
Minimum Cog 11T
Primary Color Silver
Cage Short
RD Capacity 31T
RD Weight 145g
Speed 10
Mount Standard

Product Identifiers

Vendor Item # 00.7515.090.010
UPC 710845691737

Frequently Asked Questions

Is the SRAM Red 2012 rear derailleur compatible with my 10-speed SRAM shifters?

Yes. The Red 2012 uses SRAM's Exact Actuation and is designed to work with SRAM 10-speed road shifters. It is indexed for 10-speed spacing and delivers the intended shift feel when paired with a matching SRAM 10-speed lever and cassette.

What is the difference between the short cage and WiFli medium cage versions?

The short cage version supports a maximum cog of 28T and is optimized for race-focused setups where weight and tight chain wrap matter. The WiFli medium cage extends the max cog to 32T, increasing overall capacity and allowing for larger cassettes and wider gearing—useful for hillier terrain or mixed riding.

How do the BlackBox hybrid ceramic bearings affect performance and maintenance?

BlackBox hybrid ceramic bearings reduce pulley drag and improve freewheeling efficiency, which can make a measurable difference in drivetrain smoothness. They are sealed for durability; regular cleaning and light lubrication around the bearing seals will prolong life, but they are not serviceable like cup-and-cone bearing sets.

Can I use this derailleur with Shimano shifters or 11-speed systems?

No. This model is intended for SRAM 10-speed Exact Actuation systems. Shimano shifter pull ratios and 11-speed indexing differ, so cross-compatibility will result in imperfect shifting and is not recommended.

What maintenance should I perform to keep shifting precise?

Regular chain cleaning and correct chain length are primary. Periodically check hanger alignment, limit screw settings, and B-tension. Keep pulleys free of debris and lightly lubricate the pivot points; replace worn pulleys or bearings to maintain peak performance.

Does the derailleur come with a warranty or replacement parts?

SRAM products typically include a manufacturer's warranty against defects; check SRAM’s warranty terms and your local retailer policy. Replacement pulleys and hangers are often available separately—verify part numbers and compatibility before ordering.

Buying Guide

When choosing a road rear derailleur, match the derailleur speed to your shifters and cassette first—this SRAM Red 2012 is specifically tuned for 10-speed Exact Actuation. Decide on cage length based on your cassette range: short cage for weight savings and race builds, WiFli medium cage for increased gearing range. Weight, materials and pulley technology matter for performance: look for low-mass, stiff constructions and low-friction pulley bearings if you want crisper shifts and marginal gains in drivetrain efficiency. Finally, confirm hanger compatibility and total capacity to avoid chain length and shifting issues.

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