Bicycle Archive · Specification report

1999 Specialized Fatboy Vegas TJ

Velopedia Archive ID 84750

Overview

Model year	1999
Brand	Specialized
Model	Fatboy Vegas TJ
Bicycle type	Freestyle/jumping
Archive ID	84750
Original MSRP	$499.99
Colors	Bart Gold
Sizes	Pro

Frameset

Frame construction	TIG-welded
Frame material	4130 chromoly
Fork	Specialized
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	Specialized 3-piece Team, 43 teeth
Bottom bracket	Specialized sealed bearing
BB shell width	American
Rear cogs	1-speed, 16 teeth
Chain	KMC, 1/2 x 3/32"
Pedals	Specialized platform

Brakes

Brakes	Dia-Compe 990 rear brakes, Tektro 318A rear levers

Cockpit & contact points

Headset	1 1/8" threadless Tange-Seiki Aheadset w/SST Oryg detangler
Handlebar	Pro Design chromoly
Handlebar extensions	N/A
Stem	Specialized forged ahead
Saddle	Specialized Jumping
Seatpost	Specialized aluminum, 29.2mm diameter

Wheels & tires

Hubs	Specialized sealed bearing
Rims	Alex DM-20W, 36-hole
Spokes	Specialized stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 2.125" Specialized Spanky Team
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	514.4 mm
Head-tube angle	74°
Seat-tube angle	71°
Chainstay / rear center	393.7 mm
Wheelbase	965.2 mm
Fork offset / rake	25.4 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 4, 2026.