Pro (Medium)

Overview

Finishes: Electric Blue / Sizzling Red / High Lustre Chrome

Specification

Frame: Double Butted 4130 Chromoly (Koizumi)
Forks: Double Butted 4130 Chromoly (Koizumi)
Handlebars: Diamond Back MX Chromoly, Medium (Koizumi)
Stem: Diamond Back, Alloy Head, Chromoly Shaft (Sugino)
Grips: tbc
Headset: MX-2 Quick Adjust (Tange)
Rims: 7x, 20x1.75 (Araya)
Spokes: tbc
Hubs: Large Flange, Alloy (Suzue)
Tyres: Diamond Back 2.125 MX Skin Front, 1.75 MX Skin Rear (IRC)
Brakes: 890 MX (Dia-Compe)
Levers: Pre-bent (Dia-Compe)
Cable: (Dia-Compe)
Pedals: Diamond Back Design Forged w/Concave Cage, Chromoly Spindle (MKS)
Crank: Diamond Back Forged Cotterless Alloy MX-170 or 1pc 175 (Sugino)
Bottom Bracket: tbc (Tange)
Chainring: 44T or 3pc machined teeth (Sugino)
Spider: (Sugino)
Freewheel: 16T (Suntour)
Chain: High Tech Chrome MX (HKK)
Seat: Diamond Back, Diamond Hole Pattern, 470g (Kashimax)
Seat Post: Fluted Alloy (STRONG)
Seat Post Clamp: Forged Alloy (Suntour)

Additional Information

Lifecycle: 1981 to 1983

Serial number location (frame): inside of rear dropout starting 1, 2 or 3 and ending with baseball type symbol

Serial number location (forks): inside of dropout starting 1, 2 or 3 and ending with baseball type symbol

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

Top tube length: approx 18.2"

Only one of the Pro range sold as a complete bike or just the frame and forks due to it being the most popular of the three sold and built by you or the retailer (At least in the US).