Mark Burnett's signature frame is designed around a geometry that matches his technical East Coast riding style.

Featuring short chain stays, a taller bottom bracket, 

a longer head tube and smaller hollow dropouts with integrated chain tensioners.

Simplicity rules on the Excelsior and it’s built without u-brake hardware and Gyro tab holes. 

The frame’s front triangle makes use of traditional round MotoRoss style top and down tubes with proven internal gusseting.

Features

100% 4130 Chromoly Frame (Post-Weld Heat-Treated)

MotoRoss style, double-butted, top and down tubes with proven internal gusseting.

Built without U-brake hardware and Gyro tab holes

Integrated seat clamp

Butted Seat Tube & Miter Cut Top Tube:

The seat tube is where all three triangles of the frame meet and it is crucial to keep this tube strong.

Tapered Chain & Seat Stays:

Both chain and seat stays taper to provide a refined and clean look to the frame while still providing strength. 

The are both angled on the inside for improved chain clearance and weight savings.

Hollow Dropouts with Chain Tensioners:

Hollow 8mm wide dropouts are as light as a solid 5mm dropout, but over twice as strong. 

There is a small internal chain tensioner to hold the wheel in place as well as simplify wheel removal.

Geometry

Top Tube Lengths: 20.75" 

Head Tube Angle: 75

Seat Tube Angle: 71

Chain Stay Length: 13.25-13.5”

Bottom Bracket Height: 11.8”

Standover: 9”

Tire Clearance: 2.4”

Head Tube Length: 5”

Weight: 5 LBS