Sram Eagle GX Shifter Derailleur Chain SunRace MZ80 Cassette MX02 Crank

Brand: SRAM

Product Code: 12778

Availability:Out of stock

SRAM GX Eagle with SunRace 12 Speed 11-50 MZ80 Cassette and MX02 Crank

Everything you need to convert to the newest rage in mountain biking

Simplify & Lighten up your bike with a new 1x12 Drivetrain

This 12-speed cassette fits on a standard rear freehub!

(XD driver hub not needed!)

 Best 1x 12 Speed Value Kit

SRAM Eagle GX X-HORIZON 12 Speed Rear Derailleur:

This new GX derailleur not only answers the Eagle™ drivetrain’s need for greater capacity, but it’s also the next evolution of our proven, 1x-specific X-HORIZON™ design. The larger, 14-tooth X-SYNC™ lower pulley allows 10- to 50-tooth cassette, and also adds to Eagle’s overall smooth-pedaling feel. Our new, Type-3 ROLLER BEARING CLUTCH™ features a smoother torque curve for a quieter, more consistent operation and feel. CAGE LOCK™ has been moved back and out of the way, protecting it from trail debris. And a redesigned, robust mounting system further improves the Eagle™ derailleur’s performance and overall durability.

  • Speeds: 12 Speed
  • Material: Aluminum w/ Steel Pulley
  • Advertised Weight ~ 290g
  • Colors: Black
  • Outer Cage: Aluminum
  • Compatibility: All levels of Eagle™ drive-train systems
  • Inner Cage: Aluminum
  • Spring: Steel
  • Cage Size: Long
  • Max Tooth: 50t
  • Pull: X-ACTUATION™
  • Hardware: Stainless Steel
  • Cage Lock™: With CAGE LOCK™ technology in the rear derailleur, wheel removal and installation—as well as chain installation—becomes faster and simpler. Just pushing the cage forward to create slack and lock it into place.
  • ROLLER BEARING CLUTCH™: ROLLER BEARING CLUTCH™ rear derailleurs deliver maximum drivetrain stability—even through the most punishing terrain. With ROLLER BEARING CLUTCH™ technology, derailleur bounce and chain slap are eliminated without sacrificing precision.
  • X-ACTUATION™: Developed specifically for SRAM 1x™, X-ACTUATION™ keeps shifting sharp and consistent across the entire cassette.
  • X-HORIZON™: The X-HORIZON™ rear derailleur’s ‘straight parallelogram’ design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears.

Sram Eagle GX X-ACTUATION 12 Speed Trigger Shifter:

The challenges of riding a mountain bike should be kept to roots, rocks, mud, trees, jumps, drops and breathing. Putting total control of your gear selection into the thumb of one hand, it’s simple to find the right gear, right now. The GX Eagle™ trigger shifter is the control center of the Eagle™ drivetrain. Its internal works have been updated to include a 12th gear, and improved to enhance trigger feel, precision and durability.

  • Speeds: 12 Speed
  • Compatibility: All levels of Eagle™ drivetrain systems
  • Recommended Group: GX Eagle™
  • Material: Forged aluminum trigger
  • Color: Black
  • Gear Indication: No
  • Technology Highlights: Matchmaker X Integrated™, X-Actuation™, Zero Loss™
  • MatchMaker X Integrated™: The MatchMaker X clamp is more than just a clamp. It’s like having Martha Stewart tidy up your cockpit. Since each clamp accepts up to three controls, you can put everything from your XLoc suspension lockout, your SRAM shifters and AVID brake levers as well as your Reverb XLoc remote, all on two clamps. Short of genetically engineering longer thumbs, it’s the ideal way to put everything within easy reach. Just like Martha would.
  • X-ACTUATION™: Developed specifically for SRAM 1x™, X-ACTUATION™ keeps shifting sharp and consistent across the entire cassette.
  • Zero Loss™: ZeroLoss simply means, well, zero loss—when you push on the lever, for an upshift or down shift, the cable is engaged instantly—zero loss of movement. There is no middle-ground where you're waiting for the shift to come. Gear changes are instant and precise.

Sram Eagle GX 12 Speed Chain:

The GX Eagle™ chain is designed with SRAM’s Eagle™ geometry, the GX Eagle™ chain features solid pin construction, Eagle™ PowerLock® and smooth, efficient shifting that you can count on every time out.

  • Speeds: 12 Speed
  • Closing Link: PowerLock®
  • Outer Plate: Silver
  • Inner Plate: Black
  • Pin Treatment: Chrome
  • Advertised Weight ~ 258g (126 links)
  • Material: Outer link finish Nickel
  • Rivet Type: Solid pin
  • Recommended Group: GX Eagle™
  • Compatibility: All levles of Eagle™ drivetrain systems
  • Technology Highlights: PowerLock®, Flow Link
  • PowerLock®: SRAM chain engineers developed PowerLock® as a tool free, sure, and consistent way to connect our chains. While PowerLock® does not require special tools for install, the especially tight tolerances of 10-, 11- and 12-speed drivetrains mandate that each PowerLock® is good for a one-time application only.
  • Flow Link: Ultra-smooth chain inner-plates are completely devoid of square edges, resulting in a chain that engages the cassette and chainring with far less friction, for quieter performance and better wear life. The design allows a narrower overall profile that can withstand greater angles, and also allows for a flatter outer-plate, which means more consistent chain riveting and enhanced overall strength.

SunRace 12 Speed MZ80 11-50t Cassette:

Finally a 12 speed cassette that fits on the hubs that most riders are riding on now!

Sunrace's 12 speed 11-50 wide ratio cassette.  Best value in a 1X12 drivetrain.  No need to purchase an expensive new expander sprocket or XD Driver Hub. Standard Shimano / Sram freehub compatible. 


  • 12-Speed Wide Ratio 11-50 Range
  • Fluid Drive Plus
  • SRAM MTB derailleurs are generally compatible (check its chain wrap capability), Shimano MTB derailleurs may require a longer B-tension screw
  • Fits on standard Shimano or Sram compatible freehubs.
  • Color: Black
  • Spider Material: Aluminum / Black Anodized
  • 7 Sprockets on 2 spider carriers
  • Sprocket Material: Premium Durable Steel
  • Spacer Material: Aluminum Black Anodized
  • Lockring: Aluminum Red Anodized
  • Chain Compatibility: 12 Speed
  • Cogs 11-50t: 11-13-15-17-19-21-24-28-32-36-42-50
  • Compatibility: SRAM / Shimano long cage derailleurs only (check its specs for chain wrap capability).
  • Not Compatible with Sram XD Driver Freehubs (but is with Shimano & Sram 8/9/10 speed Cassette body and Shimano 11 Speed Dynasys body)

SunRace MX02 NW 32t 12 Speed Crankset:

  • Aluminum Forged / Anodized
  • SCM435 Bolts & Nuts
  • Chromoly Axle
  • BCD 96mm
  • Color: Black
  • Weight: 921g (incl. BB and alloy chainring)
  • Narrow-Wide 32 Tooth (helps hold the chain onto the chainring)
  • Crank Arm Spline Type: Integrated External BB (S1)
  • Crank Arm Length: 175mm
  • Axel Diameter: 24mm
  • Bolt Circle Diameter: 96mm
  • Bottom Bracket
    • Model: BBM97 (S1)
    • Adapter: Aluminum / Silver Anodized
    • Shell Width: BSA 68 /73mm
  • Chainring: 32t NW (Narrow Wide alternating teeth)


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