Balfa 2Step 4X

FRAME OVERVIEW

The Balfa 2Step 4X shares its frameset with the 2004 2Step FR, but uses changed link plates. The plates reduce the bike’s travel from 5.3 to 4.3" (110 mm), slightly rake the head-angle out into 67 degrees and drop bottom bracket height to 13.5" (344 mm). It's built for 4X racing, slopestyle, jumping and general goofing around.

GEOMETRY

Imperial dimensions (inches)		SIZE
Imperial dimensions (inches)		Regular	Large
A	Seat Tube length	16.0	17.5
B	Top Tube length	22.2	23.4
C	Head Tube Angle	67°
D	Seat Tube Angle	66°
E	Chainstay Length	16.6
F	Wheelbase	43.0	44.0
G	Bottom Bracket Height	13.5
H	Standover Height	26.7	27.6
I	Head Tube Height	4.6
J	Fork length	19.9

TECHNICAL DETAILS

Rear wheel travel - 4.3" (110 mm)
Rear shock size - 7.875 x 2.0" (200 x 50 mm)
Seatpost diameter - 27.2 mm
Seatpost collar diameter - 31.8 mm
Headset - 1 1/8"
Rear axle width: 135 mm
BB shell width - 73 mm
BB axle length - 113 to 116 mm (depending on chainline)
Front derailleur - down swing, top-pull (with 31.8 mm collar)
Tyre clearance - 26 x 2.5"
Pivot bearings - 6001 RS (eight)

SUSPENSION DESIGN

2Step is suspension design with temporary (moving with compression) pivot point. It is very similar to Maestro, or DW Link. Such design's advantages are good pedalling efficiency (little to none pedal bob) and close to none suspension feedback under braking (brake-jack).

Animations by MMcG25