Overdrive 2 Headset Instruction - Giant Propel Advanced SL Disc Series Manual

4. Prevent composite expose to constant high temperatures
To avoid damage to your carbon products, please do not store or transport the product in a manner
that the product is exposed to constant high temperatures. Excessive heat can damage the resin
that joins the carbon fibers. Giant suggests to ensure that the product is kept a minimum of 45cm
away from any constant source of heat, for example car exhaust, heaters, open fire, etc.
Do not exceed 150°F (65°C) exposure to your carbon products.

5 OVERDRIVE 2 HEADSET INSTRUCTION

Propel disc bikes feature OverDrive 2 to offer unprecedented steering performance with no additional
weight. The OverDrive 2 headset features massive 1 1/4-inch top and 1 1/2-inch bottom bearings and
provides up to 30 percent more torsional steering stiffness.
Once the headset assembled, make sure that some play exists between:
• the fork crown and the bottom of the headtube
• the top of the headtube and the conical spacer
So the steer rotates freely and easily without resistance.
There is no minimum clearance value but only a recommended value:
• upper clearance : 0.5mm
• lower clearance : 1.0mm
To learn more about OverDrive 2 technology, please visit the Giant website at giant- bicycles.com.
CONICAL SPACER
0.3mm WASHER
0.5mm
COMPRESSION RING
TOP BEARING(1''1/4)
OVERDRIVE HEAD TUBE
LOWER BEARING(1''1/2)
FORK
4
1.0
1.0mm