Bicycle Archive · Specification report

1998 Sunn Stirt

Velopedia Archive ID 70048

Overview

Model year	1998
Brand	Sunn
Model	Stirt
Bicycle type	Freestyle/jumping
Archive ID	70048
Original MSRP	$493.00
Colors	Chrome-plated

Frameset

Frame construction	TIG-welded
Frame material	Chromoly
Fork	Sunn
Fork material	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
Bottom bracket	One piece
BB shell width	American
Rear cogs	1-speed, 16 teeth
Chain	1/2 x 1/8"
Pedals	Sunn DX style

Brakes

Brakes	Dia-Compe brakes, Dia-Compe levers

Cockpit & contact points

Headset	1 1/8" Odyssey Dynatron
Handlebar	Stirt, chromoly
Handlebar extensions	Not included
Stem	Rudd
Saddle	Selle Italia XO
Seatpost	Pillar, aluminum

Wheels & tires

Hubs	Rudd alloy
Rims	Sun Rims Rhyno Lite, 48-hole
Spokes	DT stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1.75" freestyle
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	520 mm
Head-tube angle	74°
Seat-tube angle	72°
Chainstay / rear center	395 mm
Wheelbase	970 mm
Fork offset / rake	30 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 28, 2026.