GX Eagle, 12sp, SRAM Drivetrain Kit Builder

GX Eagle, 12sp, SRAM Drivetrain Kit Builder

GX 12sp Eagle Custom Drivetrain Builder: BikeCo offers custom complete modules to help you spec the ultimate personalized build. Drivetrain Kits include options for Cassette, Chain, Rear Derailleur, Shifter, Cranks, Chainring and Bottom Bracket. This kit starts with GX Eagle Cassette, Rear Derailleur, Shifter & Chain. More details on products and options below:


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This page has been updated with our 12sp Drivetrain Builder Here!



BikeCo.com offers riders the SRAM 12sp GX Eagle Drivetrain Builder with a variety of options to fine tune your package.

The GX Eagle Drivetrain Builder provides choices for 12sp Cassette, Rear Derailleur, Shifter, Chain, Cranks, Chainrings and Bottom Brackets. The GX kit is spec’d with XX1 Cassette, Rear Derailleur, Shifter & Chain (for riders updating a current setup) with options to add the remaining components or change any component to another 12sp SRAM option.

Need a bit more info? Continue reading on the options available from BikeCo or reach out to our expert sales staff by chat, email, or phone.


SRAM 12sp Eagle Cassettes Drivetain Builder Kit by BikeCo.com

CASSETTE (pictured: X01, XX1, GX)

SRAM 12sp Eagle Cassettes share range, 10-50t, as well as cog sizes, 10-12-14-16-18-21-24-28-32-36-42-50, for crisp shifting performance. X01 cassettes are often used on XX1 builds for those who are looking for a touch less bling than the gold cassette comes to the plate with.

The XX1 XG-1299 has a gold colored main body with a black aluminum 50t granny gear.
UPC: 710845788314

X01 XG-1295 features a black body with a matte aluminum 50t ring.
UPC: 710845788321

GX XG-1275 is a black cassette with gray Eagle graphics on the 50t ring. The large 50t cog is an aluminum while the smaller 11 are stamped steel.
UPC: 710845804748



PC XX1 Eagle Gold and Black feature Titanium Nitride coatings and Flowlink design for longer service life, less friction and less noise than previous chains.
Gold UPC: 710845788482      Black UPC: 710845788499

PC X01 Eagle Chain features Flowlink design.
     UPC: 710845788505

GX Eagle Chain features the same link geometry as the XX1 with solid pins design.
UPC: 710845804755




XX1 12sp rear derailleurs are available in black with Gold or Gray trim. Inner cage is Forged Aluminum with a Carbon Fiber outer cage and Titanium Spring.
Gold UPC: 710845788413       Black UPC: 710845788420

X01 derailleurs are available in black with Red or Gray trim. Inner and outer cage is Forged Aluminum with a Titanium Spring.
     Red UPC: 710845788437      Black UPC: 710845788444

GX derailleurs are available in black and feature Aluminum construction with a Steel spring.
UPC: 710845804953



*A common BikeCo upgrade on GX kits is a X01 shifter for improved input feeling thanks to the Zero Loss Design & ball bearing interface

The XX1 Trigger Shifter features carbon fiber trigger and cover assembly to reduce weight, customizable setup with the adjustable pull-lever, ball bearings at the rotation interface for better feeling shifts and a new Zero Loss design for instant cable take up. Available in Black or Gold
Black UPC: 710845788345      Gold UPC: 710845788338

The X01 Trigger Shifter features customizable setup with the adjustable pull-lever, ball bearings at the rotation interface for better feeling shifts and a new Zero Loss design for instant cable take up. Available in Black or Red
Black UPC: 710845788383      Red UPC: 710845788376

GX Eagle Trigger Shifter is designed as a moderate price offering without some of the adjustability or internals of the X01 and XX1 offerings.
Black UPC: 710845804946

Grip shifters are available in XX1, X01 and GX offerings.


SRAM XX1, X01, GX Crank options on Drivetrain Kit Builder BikeCo.com


All cranks in the Drivetrain Builder Kits are 175mm, SRAM cranks are Boost. Please contact our sales staff for other options, we are happy to help!


XX1 Cranks: are hollow carbon fiber, the lightest from SRAM to date, and designed for Trail and XC riders. Cranks include X-Sync 2 chainring. Bottom Bracket NOT included.

X01 Cranks: feature with carbon fiber arms with structural foam inserts for Enduro, Big Mtn and Park riding. Cranks include X-Sync 2 chainring. Bottom Bracket NOT included.

GX Cranks: built with forged 7000 series aluminum arms. Cranks include X-Sync 2 chainring. Bottom Bracket NOT included.

Race Face and Praxis cranks available in Drivetrain Builder Kit BikeCo.com


Next R Cranks: carbon cranks developed for Enduro, Big Mtn & Park riding these evolved from the proven Race Face Next G4 and SixC technologies. No Chainring or Bottom Bracket included.

Turbine Cranks: lightest alloy crank in the Race Face lineup designed for XC, Trail, Enduro and Big Mtn riding. Forged and CNC’d alloy arms offer ultimate strength and weight savings. No Chainring or Bottom Bracket included.


LYFT Cranks: hollow carbon cranks with a M30 spindle designed for XC, Trail and Enduro riding. Requires Praxis M30 bottom bracket. Chainring included. Bottom Bracket NOT included.


Now that you have the right cranks it’s time to dial in chainring size and bottom bracket options.



BikeCo works with the best chainrings on the market. The leaders are Wolf Tooth, Race Face and SRAM combining the best performance, longevity, and adaptability. Round and Oval rings are available.



We offer the best selection of bottom brackets for the leading frames. Chris King, Hope, E-13, Race Face and Praxis. Unsure which bottom bracket your bike uses? That’s what we’re here for. Let’s get you dialed in.


Just need a new cassette, chain & chainring? Check out our GX Eagle 12sp Drivetrain Service Kit


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Pricing, Incentives, Upgrades & Questions – BikeCo has you covered

Chat with our expert sales staff for the best market incentives, performance hop ups, setup tips and more!

Chris and Landon lead the BikeCo sales team and are always up to date with the best deals for clients at all levels and across all riding styles. Years of experience on trail with a variety of the best frames, suspension, wheels, tires and accessories means the staff at BikeCo is able to help you define which components will best compliment your riding (conversely we can help steer you away from problematic gear as well).

Reach out via email - Chris is available Chris@BikeCo.com & Landon Shipping@BikeCo.com, chat, call - 949-470-1099 or 888-697-6717 or use this quick online form to start the process with the leaders in sport to pro level MTB – the experts from The Bike Company. We look forward to working with you before, during and after you bike purchase.

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