I can confirm for the L2501 this is the right hand grip. T1060-29470 It was $67.64 at my local dealer.
It is a hard part for them to find because it is not stock.
Do not forget the 2 nuts like my dealer did.
https://www.colemanequip.com/parts/details/KubotaParts/Grip-Assembly-RH/T1060-29470/...