Dirtmaster Big Bertha 2001 Technical specs and features

Brand Dirtmaster
Model Big Bertha
First production 2001
Bike category Freestyle
Bike sub-category Freestyle And Jumping
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Parts And Accessories Dirtmaster Big Bertha Parts   
Available Sizes - Pro


Wheels And Breaking System

Bike front tire24 X 1.95 (inches) Radix
Bike rear tireNot Available
Bike wheel size24 (inches) Wheels
Brakeset type Dia-Compe Tech 99 Rear Levers
Dia-Compe 990 Rear Brakes
Hubs for disc brakesRadix
Rims manufacturer 48-hole
Alex Aluminum
Spoke nipples typeBrass Nipples
Spoke wheel 2.0 (millimeters) Straight Gauge
Chung Nan Stainless Steel

Frame and Body Specifications

Frame materialsChromoly
Frame typeTIG-welded
Handlebar constructionDirtMaster Monkey Bar
Handlebar extenderNot Available
Handlebar stem detailsRadix
Headset size1 1/8 (inches) Threadless Aheadset-Tank

Gearing Specs

Bicycle chain 1/2 X 1/8 (inches)
KMC Z410
Bottom bracket shell widthAmerican
Bottom bracket type Sealed
Three Piece
Crankset parts and sizes 40 Teeth
3-piece Aluminum and chromoly
Gear shift leversNot Available
Rear gear set 18 Teeth
1-speed

Dirtmaster Big Bertha Fork System Data

Derailleur (Front)Not Available
Derailleur (Rear)Not Available
Fork material Unicrown Crown
Chromoly
Fork typeDirtMaster

Other Specs of Dirtmaster Big Bertha

Component group setsNot Available
Available colors - Black
- Green
Weight 36.0
Pedals detailsRadix
Rear shock absorberNot Available
Saddle seatRadix
Seat post extension 25.4 (millimeters) Diameter
Radix


Dirtmaster Big Bertha bike review

Dirtmaster produced the Big Bertha bike in 2001 and can be classified as a Freestyle bicycle, this exact model costs in american market arround $569.00.
Dirtmaster Freestyle Big Bertha can be found in a few colors, among these colors Black and Green .
This bike is equiped with 24 x 1.95" Radix tires and Chung Nan stainless steel spoke wheel while the rims are manufactured by Alex aluminum, 48-hole. Dirtmaster equiped this exact model with Dia-Compe 990 rear brakes, Dia-Compe Tech 99 rear levers braking system and Radix hubs.
To guarantee the comfiest ride Dirtmaster used Chromoly material for the frame. DirtMaster Monkey Bar high strength material is used on the handlebar of this Big Bertha to ensure the perfect handling while the stems are made of Radix.
For the smoothest biking experience 3-piece aluminum/chromoly, 40 teeth is used on this bicycle linked to KMC Z410 chain that is easily replaceable as stated by Dirtmaster.