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:
Air Cooled, Single-Cylinder, 2-valve, 4-stroke
56mm x 57mm
Unleaded / 91 Octane
Recommended Engine Oil
10W-40 Petroleum Based (Nonsynthetic)
Auxiliary Output (lighting)
4-Speed Manual 4Up
Four-speed Transmission: N-1-2-3-4
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 Recommended 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 peg 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: Dual feed petcock - 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
Clutch Cable (necessary if switching from Semi-Auto Transmission)
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
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
bit to let air in.
Carb Choice: Stock OEM Carb
Clutch Cable: No Clutch Cable Clutch Cable TRC-0331 (+$15.00)
Exhaust Gasket: None Yes (+$3.00)
Kickstarter: stock WHS-1722 (+$51.69)
Kill Button: None Kill Button, Yes Please (+$13.00)
Shipping: Flat Rate (+$40.00) Flat Rate (+$40.00)
Uni Air Filter: No Air Filter Uni Air Fliter (+$17.00)
Since 2004, every purchase from TBolt USA includes access to technical
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.