Kolossos ST Oversized Derailleur Cage - Shimano XTR GRX1X - Black - OVERSIZED PULLEY CAGE
Kolossos ST Oversized Derailleur Cage - Shimano XTR GRX1X - Gold - OVERSIZED PULLEY CAGE
15% off

KOLOSSOS ST OVERSIZED DERAILLEUR CAGE

Configure your Kolossos ST Below
Want your color? 150+ Cerakote finishes, hand-applied in our lab. Build yours →
Barcode: 756542465769
$276.24 $324.99
SRAM Speed Kolossos Oversized Derailleur Cage - Previous-gen Red & Force AXS - Black - OVERSIZED PULLEY CAGE

Looking for even more performance? Upgrade to the Speed Kolossos: Kogel Ceramic bearings, further reduced drivetrain friction and longer warranty.

UPGRADE

Black Friday Month: 15% off

15% off full price is already in the price above. Spend $150 and get a free hat. No code needed.

Not sure what fits?

Text us your bike and groupset and we'll tell you which one you need.

Text 915 543 1001 Call 915 777 5666

We reply during office hours, Monday to Friday, 8am to 5pm Mountain Time.

Available in 150+ Cerakote colors

Same performance, your colors. Hand-applied in our Cerakote lab.

Build Yours

Have a question about our Aero Kolossos? We love hearing from you and guarantee we’ll call you back within 24 hours.

View details

Upgrade your Shimano 12-speed drivetrain with super-smooth, accurate shifting and reduced friction. The Kolossos ST features an 18-tooth narrow-wide bottom pulley and 14-tooth top pulley on our stiffest cage yet, replacing your stock 13-tooth pulleys.

Equipped with high-quality Kogel ST stainless steel bearings, the Kolossos ST delivers excellent durability and smooth performance at a more accessible price point. Built for optimal shifting accuracy and chain retention—essential for XC, marathon, and enduro riders.

Ground clearance remains within 2mm of stock without hanging lower. Ships with road seals for maximum efficiency, with cross seals available for wet conditions.

Fitment: Compatible with Shimano XTR, XT, and GRX 1x 12-speed rear derailleurs. Not compatible with the latest Di2 XTR and XT groupsets

ACCESSIBLE PERFORMANCE.

Kolossos ST: Performance Without the Premium

Introducing the Kogel Kolossos ST, the perfect balance of performance and value in an oversized derailleur cage. Designed for riders who want the benefits of reduced drivetrain friction and improved chain stability—without the premium price tag—Kolossos ST delivers smooth, efficient shifting in a sleek, refined package. With a CNC-machined aluminum cage for durability, precision-engineered Kogel ST stainless steel bearings, and an optimized design for modern road and gravel bikes, Kolossos ST is built to perform. Whether you're pushing watts on the road or tackling mixed terrain, this is the upgrade that brings efficiency within reach. Ready to ride faster and smoother?

READ THE BLOG STORY