Picture of Yamaha DT 125 R 93-94 Barrel and Piston - Big Bore Kit
  • YAMAHA DT 125 R 93-94

  • Barrel and Piston - Big Bore Kit [AB1489]

  • $764.22
  • STOCK STATUS: ETA Please Enquire
  • Non Stock Item Ordered On Request Only

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  • Yamaha DT 125 R 93-94 Full Parts List

Part Description

Yamaha DT 125 R 93-94 Barrel and Piston - Big Bore Kit

Technical Information: Material of cylinder: Aluminium Type of cooling: water-cooled Bore: 65 mm Stroke: 50.68 mm Displacement: 168.2 cc Compression ratio: 13:1 Piston pin diameter: 16 mm Number of transfer ports: 5 Shape of the piston crown arched Number of piston rings: 2 Thickness of the upper piston ring: 1 mm Thickness of the 2nd piston ring: 1 mm Type of piston ring: chrome Material of the membrane: Not included Outlet: oval Cylinder Head: Included Maximum power at the crank: 25.5 HP / 10,500 RPM

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Motorcycle Spark Plugs
Wemoto Spark Plug Guide

Spark Plug Basics

The spark plug has two primary functions:

  • 1 - Ignite air/fuel mixture
  • 2 - Transfer heat from the combustion chamber

Spark plugs carry electrical energy and turn fuel into working energy. A sufficient amount of voltage must be supplied by the ignition system to spark across the spark plug's gap. This is called "Electrical Performance." The temperature of the spark plug's firing end must be kept low enough to prevent pre-ignition, but high enough to prevent fouling. This is called "Thermal Performance", and is determined by the heat range selected.It's important to remember spark plugs do not create heat, they only remove heat. The spark plug works as a heat exchanger by pulling unwanted thermal energy away from the combustion chamber, and transferring the heat to the engine's cooling system. The heat range is defined as a plug's ability to dissipate heat.

... Read more » Spark Plugs

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