Bicycle Archive · Specification report

1999 Specialized Fatboy 415 Pro

Velopedia Archive ID 84500

Overview

Model year	1999
Brand	Specialized
Model	Fatboy 415 Pro
Bicycle type	Freestyle/jumping
Archive ID	84500
Original MSRP	$499.99
Colors	Yellow
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 chromoly, 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, aluminum

Brakes

Brakes	Dia-Compe 990 brakes, Dia-Compe Tech 99 levers

Cockpit & contact points

Headset	1 1/8" threadless Tange-Seiki Aheadset w/SST Oryg detangler
Handlebar	Specialized chromoly 4-piece
Handlebar extensions	N/A
Stem	Specialized forged ahead
Saddle	Specialized freestyle
Seatpost	Specialized chromoly layback, 29.2mm diameter

Wheels & tires

Hubs	Specialized sealed bearing
Rims	Alex DM-20W, 48-hole
Spokes	Specialized stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 2.00" Specialized Casino
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	533.4 mm
Head-tube angle	74°
Seat-tube angle	71°
Chainstay / rear center	393.7 mm
Wheelbase	952.5 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 3, 2026.