Bicycle Archive · Specification report

1999 Hoffman SD-4

Velopedia Archive ID 83242

Overview

Model year	1999
Brand	Hoffman
Model	SD-4
Bicycle type	Freestyle/jumping
Archive ID	83242
Original MSRP	$429.99
Colors	Chrome-Plated, Red

Frameset

Frame construction	TIG-welded
Frame material	4130 chromoly
Fork	Hoffman Bikes SD-4
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, 44 teeth
Rear cogs	N/A
Chain	KMC 410, 1/2 x 3/32"
Pedals	Wellgo LU-313

Brakes

Brakes	Dia-Compe 990 brakes, Dia-Tech MX-1 levers

Cockpit & contact points

Headset	1 1/8" threadless steel w/SST Oryg detangler
Handlebar	Hoffman Bikes Jumping Bars
Handlebar extensions	N/A
Stem	Hoffman Bikes Super Stem
Saddle	HB VL-311
Seatpost	HB 4130, 25.4mm diameter

Wheels & tires

Hubs	Alloy
Rims	HB Highroller CP, 48-hole
Spokes	Steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1.95" Hoffman Bikes Skidmark
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	476.2 mm
Head-tube angle	75°
Seat-tube angle	70°

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 2, 2026.