YAMAHA

TZR250

Yamaha TZR250

Manufacturer: YAMAHA
Model: TZR250
Year: 1985
Type: Racer Replica
Origin: Japan

01 — Overview

A 1985 racer replica drawing directly on road-racing technology. Its liquid-cooled 249 cm³ two-stroke parallel twin used crankcase reed-valve induction adopted from the YZR500, set in a light, rigid aluminium Deltabox frame with 17-inch wheels front and rear and large floating disc brakes.

MAKER: YAMAHA
PRODUCTION: 1985
ERA: 1980s
CATEGORY: Racer Replica Sports Classic

02 — Historical Context

HISTORICAL CONTEXT

According to Yamaha, it was actually used by race fans as a base machine for competition.

1980s — Liquid cooling, aluminium frames and full fairings — racing technology flowed into road machines.

03 — Design

DESIGN

Form, read through detail.

04 — Engine

ENGINE

Parallel Twin

Two cylinders side by side — compact, tractable and versatile. A power stroke every revolution: light, simple and explosive — and, as emissions rules tightened, gradually retired from road machines.General description of the layout

Engine layout	Parallel Twin[1]
Cycle	Two-stroke[1]
Displacement	249 cc[1]
Cooling	Liquid-cooled[1]
Max. power	33.1 kW / 9,500 rpm[1]
Max. power	45 PS / 9,500 rpm[1]
Max. torque	34.3 N·m / 9,000 rpm[1]
Max. torque	3.5 kgf·m / 9,000 rpm[1]

05 — Chassis / Frame

CHASSIS / FRAME

Frame	Aluminium Deltabox[1]

06 — Specifications

TECHNICAL SPECIFICATIONS

Every figure is sourced. Unverified values are not published.

Production	1985[1]
Engine layout	Parallel Twin[1]
Cycle	Two-stroke[1]
Displacement	249 cc[1]
Cooling	Liquid-cooled[1]
Max. power	33.1 kW / 9,500 rpm[1]
Max. power	45 PS / 9,500 rpm[1]
Max. torque	34.3 N·m / 9,000 rpm[1]
Max. torque	3.5 kgf·m / 9,000 rpm[1]
Frame	Aluminium Deltabox[1]

07 — Generations

GENERATION HISTORY

19802000

First generation (1985)1985–

Generations, model years and market variants (Model → Generation → Variant) are added as they are verified.

08 — Cultural Context

CULTURAL CONTEXT

09 — Gallery

GALLERY

RELATED MOTORCYCLES

SUZUKI

Suzuki RG250 Gamma

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YAMAHA

Yamaha RZ250

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SUZUKI

Suzuki RG500 Gamma

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Racer Replica

YAMAHA

Yamaha FZ750

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Sports

11 — Sources

SOURCES

[1]1985 TZR250 - Communication Plaza CollectionYamaha Motor Co., Ltd. · museum · accessed 2026-09-26
[2]Yamaha Motor History - Product History (Motorcycles / Commuter Vehicles)Yamaha Motor Co., Ltd. · manufacturer · accessed 2026-09-26

12 — Image Credits

PHOTO CREDITS

Creator
Kuro8124
License
CC BY-SA 3.0 · Wikimedia Commons
Kuro8124, CC BY-SA 3.0, via Wikimedia Commons
Creator
Dbratland
License
CC BY 3.0 · Wikimedia Commons
Dbratland, CC BY 3.0, via Wikimedia Commons