Bicycle Archive · Specification report

2008 Mirraco UnderBoss

Velopedia Archive ID 14838

Overview

Model year	2008
Brand	Mirraco
Model	UnderBoss
Bicycle type	BMX
Archive ID	14838
Original MSRP	$220.00
Colors	Steel Gray, Deep Blue
Sizes	One size fits all
Weight	27 lb

Frameset

Frame construction	TIG-welded
Frame material	Chromoly
Fork	Mirraco
Fork material	Chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	BMX
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	152mm 1-piece, 38 teeth
Bottom bracket	American
Cassette	Cog
Rear cogs	1-speed, 16 teeth
Chain	KMC Z410
Pedals	Wellgo resin

Brakes

Brakes	Tektro U-brake rear brakes, Tektro 289 rear levers

Cockpit & contact points

Headset	1 1/8" VP A-71
Handlebar	Mirraco 2-piece
Handlebar extensions	Not included
Stem	M3 alloy
Saddle	M3 8mm rails
Seatpost	Steel, 25.4mm diameter

Wheels & tires

Hubs	Front: 3/8" axle, Rear: Coaster Brake
Rims	Alex C-303, 36-hole
Spokes	14ga. (2.0mm)
Front tire	Front: 20 x 2.125" CST Dirt, Rear: 20 x 1.95" CST Dirt
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 10, 2026.