Piranha 140cc Engine
fits Pit Bikes and other Minis

Vital Information
Price$383.80
Part No WHS-1143
Stock Level In Stock
Choose Options
1

This is the famous Piranha 140cc Engine.

Often referred to as the YX140cc, this is our ALL TIME best selling engine.

Top performance and economy all in one.

This is a Super sturdy and Very strong running engine.
At TBolt we offer the latest version available with larger kicker shaft and all of the most current improvements.

Front Drive Sprocket Included

See picture for included parts.  Engine available as pictured.

We've had tremendous luck with this engine, and it's a Great Replacement engine or for builds & Projects.

Engine Kit Includes:

  • Engine
  • Intake
  • CDI
  • Coil
  • Harness
  • Kicker
  • Shifter
  • Carburetor
Engine
Displacement 140cc
Engine Type Air Cooled, Single-Cylinder, 2-valve, 4-stroke
Bore/Stroke 56mm x 57mm
Final Drive Chain
Fuel Delivery OEM 22mm 
Fuel Unleaded / 91 Octaine
Recommended Engine Oil 10W-40 Petroleum Based (Nonsynthetic)
Ignition
Kick Start Yes
Electric Start no
CDI Yes
Auxiliary Output (lighting) Yes
Transmission
Transmission 4-Speed Manual 4Up
Shift-Pattern Four-speed Transmission: N-1-2-3-4
Clutch Rear 5 plate manual

Recommended:
T BOLT CLUTCH LEVER TRC-0140
CLUTCH CABLE (REAR CLUTCH) WHS-1427 or TRC-0331

Lighting set ups:
VOLTAGE REGULATOR SIMPLE HARNESS TYPE 1 TRC-0797
VOLTAGE REGULATOR / RECTIFIER 6V TYPE 1 TRC-0503
VOLTAGE REGULATOR / RECTIFIER 12V TYPE 1 TRC-0127

Recomended for your application:

Honda XR50/CRF50:
CRF50/XR50 TANK SPACER KIT TRC-1955
PEG MOUNT WITH PEGS SET UP TRC-4958

Honda XR70/CRF70:
PEG MOUNT WITH PEGS SET UP TRC-4958

Honda CT70: 
PEG MOUNT WITH PEGS SET UP TRC-4958
DUAL FEED PETCOCK ATC70 CT70 Z50 TBW0133

Honda Z50:
TBPARTS RACE PETCOCK Z50 69-78 TBW0355
TBPARTS 12 WAY ROTATING SPACER 26MM TBW1020

Honda ATC70: 
TBPARTS 12 WAY ROTATING SPACER 26MM TBW1020
DUAL FEED PETCOCK ATC70 CT70 Z50 TBW0133

Note: We suggest using an aftermarket exhaust to obtain maximum performance. 

Engine Specs

Bore: 56mm
Stroke: 57mm
Displacement: 140.4cc
Valves: Big Valve 27mm/23mm head
Gears: 4-speed, bottom neutral 4-up shift pattern
Carb: 22mm mikuni
Ignition: Standard Flywheel ignition

Not Included:

  • Skid plates
  • Exhaust
  • Air filter
  • Clutch Cable (necessary if switching from Semi-Auto Transmission)
  • Throttle Cable 
Important Upgrade info:
*VM26 606 TBW0399 carb upgrade includes TRC-0559 Boot  

IMPORTANT ENGINE STARTING INFORMATION

  • You may want to consider setting up the bike on a stand for a solid starting location at first until your confident
  • Turn on Both Fuel and Choke
  • DO NOT open the throttle (do NOT turn the throttle)
  • Move the starter down until it gets stiffer, your looking for top dead center
  • Let the starter come back up and give a full strong swift kick ALL the way thru
  • REPEAT (If necessary)
  • DO NOT KICK RAPIDLY
  • When warm just do not use the choke

Flooded Engine:
IF your flooded , pull the plug, kick it over about 10 times WITH THE PLUG OUT
Put in a NEW PLUG

For ease of starting:
You may want to consider our TRC EZ START HIGH PERFORMANCE CDI
Part No. TRC-9745

One more thing:
At times it helps to just crack the throttle a tiny bit to let air in.

Available Options:

Carb Choice:

Clutch Cable:

Exhaust Gasket:

Kickstarter:

Kill Button:

Shipping:

Uni Air Filter:

 

Since 2004, every purchase from TBolt USA includes access to technical support
from our staff of experts and our online Pit Bike Technical Info Database!
We have all necessary support parts on hand.
Most orders ship same, or next business day, unless otherwise noted above.


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