Pay in 4 interest-free payments of $95.25 Learn more
Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
They are an excellent upgrade that improves the dynamic qualities of the bike thanks to their extreme lightness
it is necessary to apply shims of 5mm to the tank connections
Back up your original ECU map and restore at any time
All available maps in the App have been accurately prepped on the dyno and fine-tuned on track/street using complete data logging systems
Developed through extensive testing of length and taper
Piston stock bore Kit "RACING" by GRT 660cc 81mm Yamaha They are an excellent upgradeProduct Description This kit includes two high performance racing pistons with an 81 mm bore, manufactured from forged aluminium for enhanced strength and durability. Featuring an increased compression ratio of 14. 2: 1 (compared to the standard 13. 5: 1), these pistons require the use of at least 100 octane fuel (EU specification). Compatibility & Intended Use Designed for the Aprilia RS660 (20212026) and Tuono 660 models, this is a race oriented
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