S3 is the specialist in Trial and Enduro parts. Innovation and high quality are the key words guiding the design of the elements that will make a difference. Tested in all conditions, the S3 products are at the cutting edge of technology and equip the best riders and trial teams.

• These flywheel weights will fit any GG Pro 250/280/300cc model
• They change the power delivery making the bike smoother and more controllable “off the bottom”
• Help the bike to grip better and help stalling
• They come with ignition cover spacer, gasket and longer ignition cover bolts.
• You will need to remove flywheel initially to fit the two ‘top-hat’ threated parts that need to be loctited in place.
• Once you have fitted the weight you can take it off and refit without removing the flywheel again
• Puller included or not included