Underground Motorsports
Engines
$579.95
The new 155 Z High Output will drop into just about any frame using CRF 50/70 motor mounts. It uses a new close ratio transmission to make grabbing gears easy with no lag. The transmission is 4-up manual (N-1-2-3-4) and can start in any gear with the clutch pulled in.
Key Features:
-Close-ratio transmission
-6 Plate clutch with Daytona clutch basket
-Removable oil filter
-New camshaft design
-Daytona style outer rotor
Crate Package Includes:
-Oil cooler, lines and mounting bracket.
-Shifter
-Outer Rotor Ignition with wiring harness, ignition coil and CDI box
-26mm Carb Kit with Jet kit
-15/420 Counter shaft sprocket
-Air Filter
SPECS:
Bore and Stroke: 60mm X 55mm (155.7cc)
The new 155 Z High Output will drop into just about any frame using CRF 50/70 motor mounts. It uses a new close ratio transmission to make grabbing gears easy with no lag. The transmission is 4-up manual (N-1-2-3-4) and can start in any gear with the clutch pulled in.
Key Features:
-Close-ratio transmission
-6 Plate clutch with Daytona clutch basket
-Removable oil filter
-New camshaft design
-Daytona style outer rotor
Crate Package Includes:
-Oil cooler, lines and mounting bracket.
-Shifter
-Outer Rotor Ignition with wiring harness, ignition coil and CDI box
-26mm Carb Kit with Jet kit
-15/420 Counter shaft sprocket
-Air Filter
SPECS:
Bore and Stroke: 60mm X 55mm (155.7cc)
$520.00
The GPX 160 will drop into just about any frame using CRF 50/70 motor mounts. The transmission is 4-up manual (N-1-2-3-4) and can start in any gear with the clutch pulled in.
Crate engine includes:
Wiring harness
High volume oil cooler, lines and mounting bracket.
Shifter and kick starter
Stator
Throttle cable and clutch cable
15/428 Counter shaft sprocket (can be changed with any Honda Z counter shaft sprocket)
The GPX 160 will drop into just about any frame using CRF 50/70 motor mounts. The transmission is 4-up manual (N-1-2-3-4) and can start in any gear with the clutch pulled in.
Crate engine includes:
Wiring harness
High volume oil cooler, lines and mounting bracket.
Shifter and kick starter
Stator
Throttle cable and clutch cable
15/428 Counter shaft sprocket (can be changed with any Honda Z counter shaft sprocket)
$480.00
Lifan 150 cc engine
Includes:
Carb and Intake
Gaskets
Wiring harness
Ignition coil
Outer rotor kit
Clutch and Throttle cable
Lifan 150 cc engine
Includes:
Carb and Intake
Gaskets
Wiring harness
Ignition coil
Outer rotor kit
Clutch and Throttle cable
$299.00
GPX Moto 90cc Kick Start Only Crate Engine
The GPX 90cc was designed to with rider in mind. Its easy to ride but packs a powerful punch.
Crate engine includes:
Wiring harness
22mm carburetor and intake
Shifter and kick starter
Stator
Throttle cable
GPX Moto 90cc Kick Start Only Crate Engine
The GPX 90cc was designed to with rider in mind. Its easy to ride but packs a powerful punch.
Crate engine includes:
Wiring harness
22mm carburetor and intake
Shifter and kick starter
Stator
Throttle cable