Overview

Finishes: Turbo smoke effect with Chrome plated components

Specification

Frame: Full Chromoly (Koizumi), Weight: 2.027 kg
Forks: Chromoly butted (Koizumi), Weight: 0.683 kg
Handlebars: Diamond Back Chromoly Large (Koizumi)
Stem: Diamond Back 'Turbo', Alloy clamp with chromoly shaft Chrome plated (Sugino)
Grips: F1 or B-1B Black/Grey (Oakley)
Headset: MTX Smoke coated (Tange)
Rims: 7x 20x1.50 (Narrow Alloy 1.5) Chrome plated (Araya)
Spokes: 80g Chrome plated Double Butted (Asahi)
Hubs: Small flange, Sealed (Suzue)
Tyres: DB Comp 3 type skinwall, 2.125 front, 1.75 rear
Brakes: 890 front and rear, Chrome plated (Dia-Compe)
Levers: Tech III, Chrome plated (Dia-Compe)
Cable: Clear (Dia-Compe)
Pedals: XC-II (Suntour)
Crank: DB Turbo Chromoly 3 Piece 181mm (Sugino)
Bottom Bracket: Chromoly Bottom Bracket Axle, sealed bearings (Sugino)
Chainring: 44T Alloy (Sugino)
Spider: alloy (integral part of crankset)
Freewheel: 16T, Chrome plated (Suntour)
Chain: 3/32 Chrome plated (DID)
Seat: Diamond Back Turbo MX, suede 5 Gold (Kashimax)
Seat Post: Aluminium Turbo, Chrome plated
Seat Post Clamp: Aluminium, Chrome plated (SR)

Additional Information

Serial number location: Left rear dropout starting 4

Rear dropout: approx 1/16" (1.6mm)

Top tube length: approx 18.5"

Overview

Finishes: Turbo Smoke

Specification

Frame: Full Chromoly with double butted 3 main tubes (Koizumi)
Forks: Chromoly (Koizumi)
Handlebars: Alloy, Turbo Somke finish
Stem: Turbo Lite hingled, alloy chrome plated, alloy shaft & wedge (Sugino)
Grips: n/a
Headset: Aero AR-202 (Tange)
Rims: n/a
Spokes: n/a
Hubs: n/a
Tyres: n/a
Brakes: AC800MX chrome plated (Dia-Compe)
Levers: Tech III chrome plated with gum end cap (Dia-Compe)
Cable: Dia-Compe
Pedals: n/a
Crank: n/a
Bottom Bracket: n/a
Chainring: n/a
Spider: n/a
Freewheel: n/a
Chain: n/a
Seat: n/a
Seat Post: n/a
Seat Post Clamp: n/a

Additional Information

Serial number location: Inside of left rear dropout starting 4

Overview

Finishes: Turbo Smoke

Specification

Frame: Full Chromoly with double butted 3 main tubes (Koizumi)
Forks: Chromoly (Koizumi)
Handlebars: DB Alloy, Turbo Somke finish (Koizumi)
Stem: Turbo Lite Hinged, alloy chrome plated, alloy shaft & wedge (Sugino)
Grips: n/a
Headset: Aero AR-202 (Tange)
Rims: n/a
Spokes: n/a
Hubs: n/a
Tyres: n/a
Brakes: AC800MX chrome plated (Dia-Compe)
Levers: Tech III (Dia-Compe)
Cable: Dia-Compe
Pedals: n/a
Crank: n/a
Bottom Bracket: n/a
Chainring: n/a
Spider: n/a
Freewheel: n/a
Chain: n/a
Seat: n/a
Seat Post: n/a
Seat Post Clamp: n/a

Additional Information

Serial number location: Inside of left rear dropout starting 4 (no evidence that Koizumi manufactured the frame beyond 1984)

Rear dropout: approx 1/16" (1.6mm)

1985 sees the continuation of the Turbo Lite as a kit.

Overview

Finishes: Turbo smoke

Specification

Frame: Full Chromoly (Koizumi)
Forks: Chromoly, butted (Koizumi)
Handlebars: Diamond Back Chromoly, Large (Koizumi)
Stem: Diamond Back Turbo, Chrome plated (Sugino)
Grips: B-1B, Black/Grey (Oakley)
Headset: MTX, Turbo smoke (Tange)
Rims: New 7x (Narrow Alloy 20 x 1.50), Chrome Plated (Araya)
Spokes: 80g double Butted, Chrome plated, Turbo smoke nipples (Asahi)
Hubs: Sealed, Chrome Plated (Suzue)
Tyres: Comp 3 type skinwall, 2.125 front, 1.75 rear
Brakes: 890 front and rear, Chrome Plated (Dia-Compe)
Levers: Tech III, Chrome plated (Dia-Compe)
Cable: Clear sleeving (Dia-Compe)
Pedals: XC-II (Suntour)
Crank: DB Turbo Chromoly 3 Piece 181mm, Turbo smoke (Sugino)
Bottom Bracket: Chromoly Bottom Bracket Axle, Sealed bearings (Sugino)
Chainring: 44T Alloy (Sugino)
Spider: N/A
Freewheel: 16T, Chrome plated (Suntour)
Chain: 3/32 Silver (DID)
Seat: Diamond Back Turbo, Suede Top 5 Gold MX (Kashimax)
Seat Post: Diamond Back Turbo, Chromoly, Chrome plated
Seat Post Clamp: Chrome Plated (SR)

Additional Information

Serial number location: inside of left rear dropout starting 4 (no evidence of 1985 fabricated framesets)

Top tube length: approx 18.6"

Identical to the 4th generation apart from the decals

Overview

Finishes: Chrome

Specification

Frame: Full Chromoly, 3 main tubes double Butted (Koizumi)
Forks: Chromoly butted (koizumi)
Handlebars: Diamond Back Chromoly medium oversize (Koizumi)
Stem: Diamond Back F1 Hinged top (Sugino)
Grips: B-1B, Black/Grey (Oakley)
Headset: MTX, Turbo Smoke (Tange)
Rims: New 7x (Narrow Alloy 20x1.5), Chrome Plated (Araya)
Spokes: 80g Chrome plated double butted (Asahi)
Hubs: Sealed, small flange, Turbo Smoke finish (Suzue)
Tyres: Comp 3 type skinwall, 1.75 front, 1.50 rear
Brakes: 890 rear (Dia-Compe)
Levers: Tech III, Turbo Smoke Finish (Dia-Compe)
Cable: Dia-Compe
Pedals: Suntour XC-II (Chromoly Axle)
Crank: Chromoly CT 3 Piece 175mm (Sugino)
Bottom Bracket: Chromoly Bottom Bracket Axle
Chainring: 44T Alloy (Sugino)
Spider: N/A
Freewheel: 16T, Chrome plated (Suntour)
Chain: 3/32, Chrome Plated (DID)
Seat: Diamond Back F-1
Seat Post: Diamond Back F-1, Chrome plated
Seat Post Clamp: Diamond Back F-1, Chrome Plated

Additional Information

Serial number location: underside of left rear dropout starting 5

Rear dropout: approx 1/16" (1.6mm)

Top tube length: approx 18"

Overview

Finishes: Turbo Smoke

Specification

Frame: Full Chromoly with double butted 3 main tubes (Koizumi)
Forks: Chromoly (Koizumi)
Handlebars: DB Alloy, Turbo Somke finish (Koizumi)
Stem: DB Turbo Lite, alloy chrome plated, alloy shaft & wedge (Sugino)
Grips:
Headset: Tange Aero (AR-202)
Rims: n/a
Spokes: n/a
Hubs: n/a
Tyres: n/a
Brakes: DB Dia-Compe AC800MX chrome plated
Levers: Dia-Compe Tech-3 chrome plated with gum end cap
Cable: Dia-Compe
Pedals: n/a
Crank: Sealed
Bottom Bracket: Euro
Chainring: n/a
Spider: n/a
Freewheel: n/a
Chain: n/a
Seat: n/a
Seat Post: n/a
Seat Post Clamp: n/a

Additional Information

Serial number location: Inside of left rear dropout starting 4

Rear dropout: approx 1/16" (1.6mm)

By 1984 the Turbo Lite was more like a kit, and with limited parts available from Diamond Back.