Engine. 170cc. 4 Valve. 23BHP. OORacing. Charger 1360

Engine. 170cc. 4 Valve. 23BHP. OORacing. Charger 1360
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£799.99 £666.66 ExVAT

Product Code: 4168

Engine. 170cc. 4 Valve. OORacing. Charger 1360. BUILD ON LINE


This engine is suitable for and can be fitted into the most common pit bikes, sachs madass, dax, monkey, bikes, Chaly, and some quads. However see service info as these have a height service intervals, piston, valve, clutch.

Madass and other bikes running Halogen lights will require the 3 phase 100W Generator

The engine kit is really more suited for road racing or speedway please see below youtube link on starting as they are very high compression.

Can be used for road racing Motocross


  • 62mm bore with a 57 stroke.
  • Honda compatible port 4 V head fully gas flowed "Subject to BHP option"
  • Cam with 7mm lift
  • Valves: Inlet valve 21mm x 2, Exhaust valve 18.5mm x 2
  • 62mm cylinder Nicosile
  • 62mm 4V cut piston kit
  • All up gears positive stop. N-1-2-3-4
  • 5 Plate clutch
  • Bridged crank cases with new needle roller bearing
  • Oil jet feed
  • Balanced crankshaft
  • Race valve springs
  • Hivo cam chain with automatic cam chain tensioner
  • No oil spinner now has outrigger housing to support R/H side of crank
  • 530G Flywheel (Lightweight)
  • New kick start shaft 16mm diameter DO NOT USE OFF SET TYPE RISK OF DAMAGE
  • Clutch cover cartrige type with integral oil filter


Whats in the kit:

  • Full carb kit Mikuni 26mm pre jetted with bolts, heat spacer, gaskets
  • Choice of manifold
  • FORCE filter in Black, Blue or Red
  • Oil filter steel washable
  • Reg/rec & CDI subject to stator and options chosen
  • NGK C7-HSA Spark plug
  • Exhaust gasket, nuts and studs
  • Service and 'Running in' info see link below
  • 10mm Breather hose
  • Kick start (Black)
  • Gear changer (Black)
  • Magnetic sump plug


All engines are fitted with the latest kick start SHEER GEARS, this is to protect the engine from any major kick back cased by improper starting.

These gears are designed to take out the energy from a kick back and sheer the gears with out shattering the crank cases.

If you install this kit into a monkey bike or DAX bike running primary clutch lever: You may need a Cable adjuster

Please note the kits with VMR118 race ignition have no lighting coils

All engine BHP reading are taken from the crankshaft, rear wheel reading will be lower.

Generator Information

All our generators are supplied with the small 88mm light weight 530 gramsperformance flywheel.


Split Phase 40W Generator.

This is the common type found on most bike identified by yellow & white wire. Also, if your main head light only works when the engine is running, you have a split phase system.

This Generator will use the original 4 pin reg/rec from your bike.


  • Lights dim and brighten with the revs.
  • Can’t install LED lights.
  • Can't operate LCD clocks with out them failing in time.



  • Yellow wire = A/C out to reg/rec & head light switch
  • White wire = A/C out to reg/rec battery charging
  • Green = Earth
  • Black/Red = Source coil
  • Blue/white = Trigger


Single phase 40W Generator.

This is the type of system where all the electrical components run off a battery. Identified by having 2 yellow wires.

Safe to run LED lights & LCD display and the lights don’t dim and brighten with the engine rev’s

Comes suplied with correct type RR reg/rec


  • 2 X Yellow wire = A/C out to reg/rec
  • Green = Earth
  • Black/Red = Source coil
  • Blue/white = Trigger


Three Phase 100W Generator

Same as the single phase 40W Generator but with a much higher output.

You can run better light such as a 55W head light and other additional accessories.

Comes suplied with the correct type SS3 reg/rec.

You will need the 4 pin CDI option for this to work, it’s a simple conversion this we can run though if you email us.


  • 3 X Yellow wire = A/C out to reg/rec
  • Blue/white = Trigger


Race generator. No Lights.

This system runs only the ignition only. There is no lighting coils and hence, will not run  lights.

4 source coils supply the CDI rather than 2. Due to no lighting coils, this reduces fluxing and resistance.

System works well with our Easy start 5 pin cdi


  • Black/red = Source coil CDI power
  • Blue/white = Trigger coil
  • Green = Earth


Service info

Road Test

Dyno run





If you don’t know what the right option for you is please don’t hesitate to call or email us with the model of your bike and year so we can advise to the right choice. info@ooracing.com Tel01304 814447


Product Code4168