Javascript is disabled on your browser.
To view this site, you must enable JavaScript or upgrade to a JavaScript-capable browser.
Request a Quote
Quick Order
Login
Register
0
Your cart is empty
Go
All Parts
Accessories
Accessories
Covers
Miscellaneous Accessories
Tie Downs
Windshields
Air & Fuel
Air & Fuel
Air Cleaners, Intakes & Parts
Carburetors & Parts
Fuel & Oil Line
Fuel Filters
Fuel Tanks, Valves & Parts
Reeds
Miscellaneous Air & Fuel
Apparel & Accessories
Apparel & Accessories
Gloves
Goggles
Helmets
Miscellaneous Apparel
Brakes
Brakes
Band Brakes & Parts
Brake Assemblies
Brake Lines & Cables
Calipers & Parts
Drums & Parts
Master Cylinder & Parts
Pads & Shoes
Rebuild Kits
Rotors
Drive & Transmission
Drive & Transmission
Axles
Belts
Chain
Clutches & Parts
Covers
Springs & Weights
Sprockets
Transmission
Variators & Parts
Electrical
Electrical
Alternator, Stator & Magneto
Batteries
Battery Chargers & Testers
Controllers
Electric Motors
Ignitions, CDI & Components
Miscellaneous Electrical
Spark Plugs & Wires
Starter Motors
Switches
Wiring
Engine
Engine
Bearings
Big Bore Kits & Cylinder Kits
Cams & Parts
Crankcases & Parts
Crankshafts & Parts
Cylinders & Parts
Engines Complete
Flywheel & Rod Assembly
Gaskets & Kits
Heads & Parts
Miscellaneous Engine
Oil Filters & Parts
Piston & Rings
Radiators & Cooling Parts
Recoils & Starters
Seals
Valves & Parts
Exhaust
Exhaust
2T (2 Stroke)
4T (4 Stroke)
Complete Exhausts
Head Pipes
Mufflers
Parts & Accessories
Frame & Body
Frame & Body
Bearings & Bushings
Fairings & Body
Frames
Kick, Center & Main Stands
Mirrors
Plastic Repair
Windshields
Handlebars & Controls
Handlebars & Controls
Cables
Gauges
Grips
Handlebars
Levers
Mirrors
Miscellaneous Accessories
Pedals & Foot Pegs
Switches & Housings
Throttle Assemblies
Hardware
Lighting
Lighting
Accessory Lighting
Bulbs
Head Lights
Lighting Controls
Tail Lights
Turn Signals
Lubes & Chemicals
Lubes & Chemicals
2T Oils (2 Stroke)
4T Oils (4 Stroke)
Body Cleaning & Care Products
Brake Fluids
Coolants
Greases
Miscellaneous Chemicals
Paints
Suspension Oils
Transmission Oils
Luggage
Luggage
Hard Luggage
Luggage Racks
Soft Luggage
Merchandising
Seats
Seats
Seat Covers
Seat Miscellaneous
Seats
Security & Audio
Security & Audio
Audio
Locks
Suspension
Suspension
Fork Assy
Shocks
Spring/Spring Kits
Tires, Wheels & Accessories
Tires, Wheels & Accessories
Bearings
Front Wheels
Rear Wheels
Tire & Wheel Accessories
Tire & Wheel Tools
Tires
Tubes
Valve Stems
Tools & Repair
Tools & Repair
Carburetor Tools
Chain Tools
Electrical System Tools
Engine Tools
Miscellaneous Tools
Suspension Tools
Tire & Wheel Tools
Transmission Tools
Engine Diagrams
50cc QMB139 4-stroke Scooter Parts
50cc QMB139 4-stroke Scooter Parts
Air Filter
Camshaft
Carburetor
Clutch and Variator
Crankcase
Crankcase Cover-Left Side & Kickstarter
Crankcase Cover-Right Side
Cylinder Head
Cylinder Head Cover
Cylinder/Piston/Crankshaft Assembly
Fan Cover
Gear Box
Magneto and Oil Pump
Starter Motor
150cc GY6 4-stroke Scooter Parts
150cc GY6 4-stroke Scooter Parts
Air Filter
Belt/Clutch Assembly
Body Panel Front
Body Panel Rear
Cam Chain Tensioner
Camshaft / Valve Train
Carburetor
Center Stand
CVT Cover
Cylinder
Cylinder Head
Disc Brake Front
Disc Brake Front Handle
Disc Brake Rear
Electric
Electric Starter / Starter Clutch Assembly
Engine Mount
Fan Cover
Floor Panel
Front Fork
Front Kick Panel
Front Turn Signal
Fuel Tank
Handlebar
Handle & Control Switch
Head Light
Muffler
Piston / Crankshaft
Rear Shocks
Rear Tail Lamp
Right & Left Crankcase
Right Crankcase Cover
Stator/Cooling Fan/Oil Pump
Seat
Speedometer
Speedometer Cover
Transmission
Valve Cover
Variator/Kick Starter
Wheel- Front
Wheel-Rear
50cc & 90cc Minarelli 1PE40QMB/1PE50QMF 2-stroke Scooter Parts
50cc & 90cc Minarelli 1PE40QMB/1PE50QMF 2-stroke Scooter Parts
Carburetor & Reed Valve
Clutch & Variator
Cooling Fan
Crankcase Assembly
Cylinder & Cylinder Head
Magneto/Stator
Oil Pump
Piston & Crankshaft
Starter Motor & Kick Starter
Transmission Long Version
Transmission Short Version
250cc Water-Cooled 4-stroke Scooter Parts
250cc Water-Cooled 4-stroke Scooter Parts
250cc Camshaft and Valves
250cc Camshaft Chain
250cc Carburetor
250cc Clutch
250cc Crank Case
250cc CVT Transmission Cover
250cc Cylinder Body
250cc Cylinder Head
250cc Cylinder Head Cover
250cc Electric Starter Motor
Exhaust
Handlebar/Control
250cc Magneto/Stator
250cc Piston and Crankshaft
Radiator and Electrical
250cc Right Side Crankcase Cover
250cc Transmission
250cc Variator
250cc Water Pump
50cc D1E41QMB 2-stroke Scooter Parts
50cc D1E41QMB 2-stroke Scooter Parts
Air Filter
Carburetor
Clutch
Crankcase
Cylinder/Cylinder Head
Electrical
Fan/Cooling
Frame
Front Wheel
Fuel Tank
HandleBar
Headlamp
KeySwitch/Wiring Harness
Kick Starter
Left Handle Switch
Muffler/Exhaust
Oil Pump
Oil Tank
Piston/Crankshaft
Rear Wheel
Right Handle Switch
Transmission
Razor Parts
Razor Crazy Cart
Razor DeltaWing
Razor Dirt Quad
Razor Dune Buggy
Razor DXT Electric Drift Trike
Razor E-90
Razor E-100/E-125
Razor E-150
Razor E-175
Razor E-200
Razor E-300
Razor E-500
Razor EcoSmart Metro
Razor E-Punk
Razor E-Spark
Razor Ground Force Drifter
Razor Ground Force Go Kart
Razor Kick Scooter Parts
Razor Mini-Chopper
Razor MX350 Dirt Rocket
Razor MX400 Dirt Rocket
Razor MX500 & MX650 Dirt Rocket
Razor Pocket Mod Bistro/Bella Scooter
Razor Pocket Rocket
Razor Power Core 90
Razor Power Core E90
Razor Power Core E90 Glow
Razor Power Core E100
Razor Ripstick/Caster Board
Razor RSF350 Electric Sport Bike
Razor RSF650 Electric Sport Bike
Razor Sport Mod Scooter
Razor SX500 Dirt Rocket McGrath
Razor Trikke & Trikke E2
RazorX DLX Electric Skateboard
View All Razor Parts
All Brands
101 Octane
Airsal
Arreche
Athena
Bando Belts
Ban Jing
Bel-Ray Oils
Dellorto
Dennis Stubblefield Tools
Driven Performance
Dr. Pulley
Duro Tires
EBC Brakes
Forsa Shocks
Gates Belts
Heidenau Tires
Helix Racing
J. Costa
Kenda Tires
Koso Performance
LeoVince Exhaust
Mitas Tires
Naraku Performance
NGK
OKO Performance
Outlaw Racing
PBI Sprockets
Pit Posse Tools
Polini
Razor
RDR Performance
Red Star Locks
SSP-G Performance
TFC Performance
Tecnigas Exhaust
Uni Air Filters
Universal Parts
Vee Rubber Tires
View All Brands
New Parts
Clearance
Tire Finder
Electric Scooter Parts
Go
Home
All Parts
Drive & Transmission
Transmission
Back
Drive & Transmission
Axles
Belts
Chain
Clutches & Parts
Covers
Springs & Weights
Sprockets
Variators & Parts
Narrow By
11 Products
Clear All
Most Popular Models
QMB139 50cc
GY6 150cc
Aprilia SR50
Genuine Buddy
Genuine Roughhouse 50
Honda Elite/Dio 50 (94-01)
Honda Ruckus
Kymco Agility
Kymco People
Minarelli Clone 50cc
Piaggio
Vespa
Yamaha Zuma 50
See More
See Less
Vehicle Type
ATV
Street Scooter
Brands
Dr Pulley
J.Costa
Naraku
Polini
SSP-G
Universal Parts
See More
See Less
Performance Level
Performance
Stroke
2T
4T
Displacement
49cc
50cc
70cc
80cc
90cc
custitem_acs_filter_item_from_web
false
Transmission
11 Products
Sort & Filter
12 per page
24 per page
48 per page
100 per page
Relevance
Price, low to high
Price, high to low
Narrow By
Narrowed By:
QMB139 50cc
Naraku
Clear All
Naraku QMB139 Super Transmission Kit Eco
Part #: 137-2
Add to compare
$149.99
Add to Cart
Naraku QMB139 Super Transmission Kit
Part #: 137-1
Add to compare
$249.99
Select options
Naraku QMB139 Variator Kit
Part #: 137-42
Add to compare
$69.99
Add to Cart
Naraku 107mm Sport Clutch
Part #: 137-6
Add to compare
$65.99
Add to Cart
Naraku 107mm Clutch Bell
Part #: 137-62
Add to compare
$64.99
Add to Cart
Naraku QMB139 Variator Drive Face
Part #: 137-29
Add to compare
$44.99
Add to Cart
Naraku Performance QMB139 & Piaggio Torque Spring Base
Part #: 137-80
Add to compare
$39.99
Add to Cart
Naraku QMB139 Adjustable Drive Sheave
Part #: 137-30
Add to compare
$79.99
Add to Cart
Naraku Variator Control Shims for QMB139 50cc
Part #: 137-25
Add to compare
$4.99
Add to Cart
Naraku 669-18-30 CVT Drive Belt
Part #: 137-23
Add to compare
$21.99
Add to Cart
Naraku 788-18-30 CVT Drive Belt
Part #: 137-24
Add to compare
$24.99
Add to Cart
Select up to 4 items to compare.
Compare now
Select up to 4 items to compare.
