Bicycle Archive · Specification report

1999 Haro Group 1 Si Mini

Velopedia Archive ID 81767

Overview

Model year	1999
Brand	Haro
Model	Group 1 Si Mini
Bicycle type	BMX
Archive ID	81767
Original MSRP	$260.00
Colors	Chrome-Plated
Sizes	Mini
Weight	18 lb

Frameset

Frame construction	TIG-welded
Frame material	4130 chromoly
Fork	Haro
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	Fusion 3-piece aluminum, 42 teeth
Bottom bracket	YST BB 969
BB shell width	68mm English
Rear cogs	1-speed, 16 teeth
Chain	KMC 230HX, 1/2 x 3/32"
Pedals	Wellgo LU-965A

Brakes

Brakes	Tektro 420AG rear brakes, Haro Fusion rear levers

Cockpit & contact points

Headset	1" threadless Aheadset STS
Handlebar	Haro
Handlebar extensions	N/A
Stem	Haro
Saddle	Haro Unibody
Seatpost	Haro Unibody, 22.2mm (7/8 inch) diameter

Wheels & tires

Hubs	Formula OV 31
Rims	Alex AL-DR13, 32-hole
Spokes	Stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1 3/8" Ritchey Speed Max Alpha
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	438.1 mm
Head-tube angle	71°
Seat-tube angle	72°
Chainstay / rear center	358.1 mm
Wheelbase	863.6 mm
Fork offset / rake	28.6 mm

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