Don't now about yours, but i've before shortened ~5mm of saito grips. Had to cut the end anyway to because of the hand guard.

How much are they to long ?

You might be able to move the throttle housing and clutch base enough inwards ?

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2011 Yamaha XT660Z ABS T�n�r�.

• Puig +8cm dark screen, Garmin Zumo 220, Scottoiler eSystem v2
• Barkbusters Storm with external weights, Noname 30mm bar risers & EzMoto alu. levers
• Kev's O2 Controller, Mccoi stepless controller with Hein Gericke heated grips
• TT +4cm seat, Pivot Pegs, Altech stainless sprocket cover