1984 Diamond Back Viper

Diamond Back Viper

1984 Diamond Back Viper – Photo Credit Eddie Poole

Diamond Back Viper BMX Introduction

During the early 1980s, The Diamond Back Viper was one, if not the best selling bikes in the Diamond Back range. An entry level street bike, with the same look at its more expensive Japanese cousin – The Silver Streak – The Viper model went on to live for various years in several guises and versions.

Absolutely the best entry level bike on the market today.

Eddy King, Diamond Back Factory Pro

Diamond Back Viper Specifications

VariantsViper 83/84
A) Coaster brake
B) Freewheel
FinishChrome/Black or Blue
FrameDiamond Back Hi-tension Steel
ForkDiamond Back Hi-tension Steel
HandlebarsDiamond Back, chrome plated
GripsF1 Style Black and Grey (Fuan)
HeadsetDB Chrome plated
StemDiamond Back Alloy chromoly shaft (MS-422 SR/Sakae Ringyo)
RimsSteel 7X type
Spokes105g /36 steel spokes
HubsSteel hub
Brake calipersA) Dia-Compe MX 890 rear
B.) Dia-Compe MX-890
front & rear
Brake leversDia-compe Tech-3
Brake padsDia-Compe.
TiresComp-3 type skinwall
20 x 2.125″ Front
20 x 1.75 ” Rear
PedalsHTI MX Chromoly spindle
CranksForged steel one piece
Bottom BracketLooseball
Front Sprocket44T
Rear SprocketA) Suntour coaster brake
B) Suntour 16T
ChainDB Black and chrome
SeatDB Aero ( Fuan)
Seat PostChrome plated post
Seat Post ClampAlloy black clamp

Diamond Back Viper Identifying Characteristics

The Diamond Back Viper’s initial production run was from late 1983 to 1984. It was the first bike produced for Diamond Back in Taiwan by the Fairly bicycle company and has an almost identical (in appearance) frame geometry to both the Silver Streak and Medium Pro. Unlike those bikes, it is made from Hi-Tensile steel and, as a result is much heavier.

The serial number for the 83 and 84 models of viper, can be found on the bottom bracket and are in the Fairly serial number format of an F, followed by 7 numerical digits.

Other characteristics are:

  • A large, 3 TIG gusset
  • A noticeably laid back seat post when compared to the head tube
  • serial number beginning with either a F3, or F4
  • Thickish rear dropouts, these are 1/4″ or approximately 3mm
  • Available colours were Chrome/Black or blue