Scooter Anti-theft Disc Lock with Shock Sensor Alarm
Security anti-theft lock universal for motorcycle, scooter, bicycle etc.
It works by locking the disc brake.
Simple and convenient operation. Click the lock cylinder, it will be locked.
Support warning alert function. There will be alarm sounds if the lock is shocked by someone.
Color: red, green, black(optional)
Lock pin: 5.5cm
Alarm decibel: 1100dB
Package size: 18.5 * 12 * 4cm / 7.3 * 4.7 * 1.6in
Package weight: 562g / 19.8oz
1 * Lock
3 * Keys
Press the key cylinder to lock with a "beep" sound, it puts on alert in 10 seconds accompany with a vibration and three "beep" sound. If the lock is shaked, another shake after 5 seconds will cause alarm, and hereafter continuous vibration can bring continuous alarm. No shake occurs within 10 seconds after the alarm, it will be on alert again.
When replacing the battery, first unscrew the screws at the bottom of the lock, then remove the cover to replace the battery.
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Supported Models: QMB139 50cc/49cc , Various unlisted makes/models
Naraku 50cc QMB139 4-stroke 52.4mm, Racing Big Bore Cylinder and Head Kit. Kit includes cylinder, piston, rings, piston pin, cir clips, cylinder head, head gasket, and base gasket.
When used in conjunction with a stock stroke of 41.4mm the total displacement comes out to 89.3cc! When used with a 44mm stroker crank, total displacement measures 94.9cc!
Please see our Warranty & Returns Policy.
Please note: replaces Cylinder Heads with 64mm Valves (Short Valve Style). Please see Related Items if you need 64mm valves. You may need to modify your engine case to accommodate the larger cylinder.
- Upgrades to 89.3cc
- Cylinder Bore: 52.4mm
- Cylinder Sleeve Outer Diameter: 54.4mm
- Wrist Pin Diameter: 13mm
- Total Piston Height: 36.3mm
- Compression Height (from center of wrist pin hole to top edge of piston): 20mm
- Non-emissions style head
- Intake valve: 23mm
- Exhaust valve: 20mm
- Intake Port Diameter: 20.8mm
- Exhaust Port Diameter: 18.7mm
- Uses Short 64mm Valve Stems