GT 2021 Slammer BMX Bike (20" Toptube) (Trans Electric Blue)

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The 2021 GT Slammer BMX Bike is an entry level model designed to help teach and improve the technique of new riders. To achieve this design goal GT equipped the Slammer with components such as a gyro so that the bars can spin freely without the brakes engaging, a cassette rear hub, and the popular 20 x 2.3" tire size. If you are a beginning rider, the GT Slammer BMX Bike is the perfect place to start.

Raw and Translucent colors may show small veins or patches of surface rust under the finish. This is normal and does not affect the integrity of the product.

Frame: GT Freestyle Design, High-Tensile Steel Tubes, Downtube Gusset
Fork: GT Freestyle Design, High-Tensile 2-Piece Steerer and Tapered Legs (31mm Offset)
Headset: External Threadless (1-1/8")
Stem: GT Top Load, Cold-Forged Cap (40mm Reach) (32mm Rise)
Bars: GT Freestyle 2-Piece Steel (8.375" Rise) (28" Wide) (3° Up) (11° Back)
Grips: GT Super Soft Single Compound (155mm)
Bar Ends: GT Removable Plugs
Cranks: GT Power Series Chromoly 3-Piece, Chromoly 8 Spline Spindle (170mm)
Bottom Bracket: American Loose Ball (19mm)
Pedals: GT Low Profile FS Platform, PP Material, Boron Axle
Chain: KMC S1
Sprocket: GT Steel (25 Tooth)
Front Hub: Steel Body, Loose Ball Bearings (3/8" Heat Treated Axle)
Rear Hub: Alloy Body, 1 Loose Ball/4 Sealed Bearings, Cassette (14mm Axle)
Driver: 9-Tooth
Front Rim: Alloy (Single Wall) (36 Hole)
Rear Rim: Alloy (Single Wall) (36 Hole)
Front Tire: Innova (20 x 2.3")
Rear Tire: Innova (20 x 2.3")
Seat: Railed
Seat Post: Alloy (25.4mm)
Seat Clamp: TBD  
Lever: Alloy
Brakes: SST ORYG Detangler, Aluminum U-Brake w/ Soft Compound Pad
Brake Mounts: Welded
Gyro Tabs: Drilled (Included)
Extras: N/A
Color: Trans Electric Blue
Weight: TBD

Frame Geometry:
Toptube: 20"
Chainstays: 13.2"
Headtube Angle: 75°
Seattube Angle: 71°
Stand Over Height: TBD
Bottom Bracket Height: 12"
Sizing Guideline: 4'10" to 5'3" Tall

Need help building your complete bike? Check out our bike build video below.

NOTE: To ensure that every component on your bicycle is working properly, Dan's Comp recommends that all bikes be assembled by a qualified mechanic. Improper assembly of your bicycle may lead to premature wear or failure of individual components such as headsets, crank assembly and wheels. Failure to do so may void the manufacturer warranty.

This product was added to our catalog on August 25, 2020

Verified Owner
Friday, Apr 9 2021 (about a year ago)
GT 2021 Slammer BMX Bike (20" Toptube) (Trans Electric Blue)
This bike is beautiful. The paint job is amazing and it’s what you would expect from GT. I went with this bike for my 10 year old daughter and this bike is almost to low to the ground for her. It is a very very low bike. When I ride it my knees almost hit my chest. Riding it standing up is not a problem at all. I raised the seat up a bit and it seems to be ok for her now. I imagine this is why they call it a slammer. This is not a bad thing in the bike design most guys at the park I see riding have their bike low and this bad boy is slammed to the ground. This is a very fast and smooth bike and very lite. It’s a head turner. I give this bike five stars because from the second you pull the bike out the box and start assembling it there is not a part on it that I would change. Top notch quality beauty and a very very smooth ride almost can’t even feel the bike under you when you ride it. The GT DYNO takes the cake but this bad boy is not far behind at all.
Verified Owner
Tuesday, Oct 6 2020 (about a year ago)
GT 2021 Slammer BMX Bike (20" Toptube) (Trans Electric Blue)
Quick delivery. Awesome bike. The color was better than I expected. 100% satisfied.