Tree Bicycle Co OG 19mm Spline Drive Sprocket (Black) (25T) (For 19mm 48 Spline Spindle)

Tree Bicycle Co OG 19mm Spline Drive Sprocket Description:

The Tree OG Spline Drive chainwheel is machined from 1/4″ thick 7075-T6 aluminum for superior strength and a classic 5 spoke design with triangular cutouts for weight savings. Includes a heat-treated steel splined insert for use with 19mm 48 splined spindles eliminating the need for a sprocket bolt. Offset 1/8″ teeth help improve chain alignment.

Note: Due to the tight tolerances and various manufactures of spline-drive, Dan’s Comp recommends matching the same brand cranks and spline-drive sprocket to ensure compatibility. 

Specifications:

• Teeth: 25T, 28T, 30T
• Thickness: 1/4″ (6.5mm)
• Material: 7075-T6 Alloy
• Bore: 19mm
• Adapter: Included (splined for 19mm 48 spline spindles)
• Color: Black
• Weight: 3.1 oz (25T)

Not sure which sprocket will work on your bike? Confused by all the sizing and gear ratios? Learn all about sprockets and how to install them in our tech help section here.

This product was added to our catalog on March 3, 2025