Bicycle Archive · Specification report

2004 Hoffman Bikes Rhythm 18"

Velopedia Archive ID 31097

Overview

Model year	2004
Brand	Hoffman Bikes
Model	Rhythm 18"
Bicycle type	Freestyle/jumping
Archive ID	31097
Sizes	Junior

Frameset

Frame construction	TIG-welded
Frame material	Chromoly top tube, down tube/hi-tensile steel
Fork	Hoffman
Fork material	4130 chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	1-piece chromoly, 39 teeth
Rear cogs	1-speed, 16 teeth
Chain	KMC 410, 1/2 x 1/8"
Pedals	Wellgo aluminum

Brakes

Brakes	Tektro 907A U-brake rear brakes, Tektro 289A rear levers

Cockpit & contact points

Headset	1 1/8" threadless Cane Creek
Handlebar	Hoffman Mini 2-piece
Handlebar extensions	N/A
Stem	Hoffman Block Stem
Saddle	Hoffman 8mm
Seatpost	Steel, 25.4mm diameter

Wheels & tires

Hubs	Front: aluminum, 14mm axle, Rear: aluminum, 14mm axle flip-flop
Rims	Jalco, 36-hole
Spokes	UCP, 14ga. (2.0mm) straight gauge
Spoke nipples	Brass nipples
Front tire	18 x 1.95" Hoffman Skid Mark
Wheel size	18" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 23, 2026.