Bicycle Archive · Specification report

1999 Diamondback Response

Velopedia Archive ID 83638

Overview

Model year	1999
Brand	Diamondback
Model	Response
Bicycle type	Mountain bike, non-suspension
Archive ID	83638
Original MSRP	$309.99
Colors	Ivory/Ruby, Yellow
Sizes	14", 16", 18", 20", 22"
Weight	27.5 lb

Frameset

Frame construction	TIG-welded
Frame material	7005 aluminum w/replaceable derailleur hanger
Fork	Diamondback
Fork material	Chromoly, oversize, unicrown crown
Rear shock	N/A

Drivetrain

Component group	Shimano AceraX
Shifters	Shimano AceraX EZ Fire
Front derailleur	Shimano AceraX top-swing, top-pull/clamp-on 31.8mm
Rear derailleur	Shimano AceraX
Crankset	Shimano Altus, 24/34/42 teeth
Bottom bracket	YST BB 969, 116mm spindle
BB shell width	68mm English
Rear cogs	7-speed, 14 - 28 teeth
Chain	KMC Z-51, 1/2 x 3/32"
Pedals	Wellgo LU-983D

Brakes

Brakes	Tektro 823A linear-pull brakes, Shimano AceraX levers

Cockpit & contact points

Headset	1 1/8" threadless Aheadset STS
Handlebar	Lee Chi
Handlebar extensions	Not included
Stem	JD aluminum
Saddle	Diamondback All-Terrain
Seatpost	Aluminum micro-adjust, 27.2mm diameter

Wheels & tires

Hubs	Joy Tech aluminum, Q/R
Rims	Kin Lin RT-6n, 36-hole
Spokes	Shuhn Lih stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	Front: 26 x 1.95" Kenda K-877, Rear: 26 x 1.95" Kenda K-887
Wheel size	26" wheels

Geometry · Legacy reference

Top tube	571.5 mm
Head-tube angle	71.5°
Seat-tube angle	74°
Chainstay / rear center	424.2 mm
Wheelbase	1064.3 mm
Fork offset / rake	45 mm

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