1999 Dyno

Slammer

RIDER STYLE
Flat/Street/Vert
1999 Dyno slammer BMX

1999 Dyno Slammer. Dyno flatland frame with full 4130 CrMo tubing, elevated stays, Pac-Man dropouts and welded-on detangler cable stops *Full CrMo threadless GT freestyle fork, 1-1/4-inch legs, Pac-Man dropouts * GT three-piece CrMo crankset, U.S.A. made. GT CNC'ed one-piece chainwheel. GT aluminum platform pedals. GT Mohawk high flange sealed-bearing hubs. GT Airbag tires. Dyno 4130 CrMo oversized 4-piece freestyle handlebar with gussets. GT freestyle padded saddle w/bashguards and 9mm CrMo rails. GT micro adjust double bolt CrMo seatpost. GT Kraton freestyle grips. Front and rear 50mm aluminum axle pegs. Color available: Red Rum.

BMX CATALOGUE
All models
Dyno 1999 BMX Arrow Icon
1999 Dyno
Arrow Icon
All 1999 Models
 Arrow Icon
All Years
 1999 Dyno slammer Arrow Icon
Slammer
 1999 Dyno detour Arrow Icon
Detour
 1999 Dyno compe Arrow Icon
Compe
 1999 Dyno zone Arrow Icon
Zone
 1999 dyno nsx-cb Arrow Icon
NSX CB
 1999 Dyno blaze Arrow Icon
Blaze
 1999 Dyno nitro Arrow Icon
Nitro
 1999 Dyno vfr-24 Arrow Icon
VFR 24
 1999 Dyno vfr Arrow Icon
VFR
 1999 Dyno nsx-fw Arrow Icon
NSX FW
 1999 Dyno xr Arrow Icon
XR
Room Icon
ORIGINAL SPECS
For this model
Frame
Fork
Handlebar
Rims
Hubs
Pedals
Front Brakes
Rear Brakes
Levers
Seat
Grips
Stem
Tyres
Cranks
USA CR-MO PacMan
CR-MO PacMan
CR-MO 2pc Gusset
CP DW 48H
GT Mohawk
GT Alloy Platform
Dia Compe 990U
Dia Compe 990U
Dia Compe Tech99
Padded GT FS
GT Kraton FS
USA GT Piston
GT Airbag
3pc 170 CNC 39T

Headset Size

1 1/8"

Seatpost Size

25.4mm

Top Tube Size

19.20

Original Colours

red rum
Serial Number Icon
Serial Number
Format

S8XTO00000 S9YTO00000
Made in Taiwan.
The second digit in the serial indicates year of production (1998 or 1999). X in the serial indicates production Month (E to L - May to Dec). Y in the serial indicates production Month (A to D - Jan to April).

Bikes made in Taiwan usually had an 5-8 month production and shipping timeline before they were sold in bike shops around the world. Bikes welded in the later months of the year would normally be made for the following year.

For more detail on what the serial number means on your mid school GT BMX, check out our easy-to-follow serial number guide.

GT BMX Mid School Serial Guide