Contact Us

3310 S. Brunson Street
Oklahoma City, OK
73119 USA

Phone & Fax:
(405) 605-3765

Sales Questions:

Technical Questions:

FDR-493-1-1/8 Honda GXH50 49.3 cc Four Cycle Rear Mount Bicycle Engine Kit

FDR-493-1-1/8 Honda GXH50 49.3 cc Four Cycle Rear Mount Bicycle Engine Kit
Click to enlarge
Sale Price: $664.12
Compared at: $769.00
You Save: $104.88
Product ID : 3245
Weight: 30.00 lbs



FDR-493-1-1/8" Honda GXH50 49.3 cc Four Cycle Rear Mount Bicycle Engine Kit.

Friction Drive Rear Mount Kit with the Honda GXH50 49.3 cc 2.50 HP Four Cycle - 4 Stroke engine.

This engine kit has the 76 mm clutch rotor - 78 mm clutch drum / Clutch bell and can be ordered with many sizes drive rollers. 

 The ID of the channel is 3.4" wide.

This is a complete Rear mount friction drive kit that will mount to most Bicycles.

The kit includes:

This kit has the 1-1/8" Drive Roller with 12mm x 1.50 male right hand threads .

One: Honda GXH50 49.3 cc 2.50 hp Four Cycle Engine with engine manual.

One: Custom made 90" long throttle cable with the small lever & #16 mini hose clamp.  You cut to fit.

One: 5/8” ID Shaft collar, no set screw, used as a spacer for the 3 shoe clutch rotor.


Two: 5/8” ID Machined 14 gage washers, used as a spacer.


One: 5/8” ID Machined 18 gage washers, used as a spacer.


One: 6mm x 18 mm Flat Washer, to hold the clutch rotor on the shaft.


One: ¼-28 x ½” Button Head Cap, to hold the clutch rotor on the shaft.


Four: 8” long Black Nylon ties to secure the throttle cable and stop switch wire to the frame.


One: 3/16” Round x ½” long Pin Used as a key. (we have used a round key with the 3/16” square way for years with Zero problems)


One: Remote push button stop switch with connecting end (s).


Two: ¼” x ¾” x 15” long Aluminum flat bar, CNC machined and Black Anodized.


One: Alloy Skewer - Quick Release, 5m -.80 x 161mm with channel spacers and hardware.


One: "U" Bracket with backer plate, zinc plated with hardware


Four: 6mm x 1.0 x 45 mm Hex Head Bolts.


One: Engine spacer, steel, zinc plated.


One: 76 mm Clutch Drum with 12mm x 1.50 female right hand threads and zinc plated.

One: 1/4" thick Aluminum Extrusion channel that is CNC machined and Anodized Black.


( not a bent thin piece of steel like the others that have tried to copy my product )


Two: 5/8” ID x 1-3/8" OD x 7/16" wide High Speed Double Sealed Ball Bearings with retaining ring.


We use one High Speed Double Sealed Ball Bearing on each side of the Drive Roller to support it and remove all the pressure off the engine.


The 1-1/8" drive roller is the standard and most common size for riders up to 400 lbs with mostly flat ground that want a fast top speed about 30 mph. Mostly used with engines 1.60 HP and Higher.

If you want LESS top speed, more pulling power for hills and bucking the wind pick a smaller drive roller.


If you want a FASTER top speed, less pulling power on hills and bucking the wind pick a larger drive roller. 


Keep in mind the larger the drive roller you will have to assit pedal the bike up hills and high winds.


If you want to Up Grade the Bearings to the High Quality made in Taiwan bearings CLICK HERE


About the Engine:


Engine Type Air-cooled, 4-Stroke, OHV, single cylinder
Bore x Stroke 41.8 x 36 mm (1.65 x 1.42 in)
Displacement 49 cm3 (2.99 cu in)
Compression Ratio 8.0 : 1
Net Horse Power Output* 1.6kW (2.1HP) at 7,000 rpm
Net Torque 2.7 Nm (2.0 lbs ft) at 4,500 rpm
PTO Shaft Rotation Counterclockwise (from PTO shaft side)
Ignition System Transistorized magneto ignition
Starting System Recoil Starter
Carburetor Float Type
Lubrication System Forced Splash

Product Reviews

Login or Register to write the first review.

Products You May Like

Product ID : 3992
Weight: 18.00 lbs
Product ID : 2493
Weight: 1.15 lbs
Product ID : 2723
Weight: 21.00 lbs
Product ID : 3434
Weight: 18.00 lbs
Product ID : 3435
Weight: 18.00 lbs