▁( one ▁re brand ed ▁as ▁Der bi ▁and ▁one ▁as ▁Gil era ). ▁ ▁In ▁ 1 9 9 1 ▁the ▁original ▁tank ▁was ▁ 1 2 ▁lit ers , ▁which ▁became ▁ 1 3 ▁in ▁ 1 9 9 4 ▁and ▁ 1 4 ▁in ▁ 1 9 9 5 ; ▁the ▁original ▁car bur ator ▁was ▁a ▁D ell ' Or to ▁V H SB ▁ 3 9 , ▁which ▁was ▁upgrad ed ▁to ▁a ▁D ell ' Or to ▁V H SD ▁ 4 1 ▁in ▁ 1 9 9 6 ▁and ▁to ▁a ▁D ell ' Or to ▁V HS G ▁ 4 2 ▁in ▁ 2 0 0 6 . ▁ ▁Since ▁ 1 9 9 6 ▁the ▁bra ke ▁specification ▁has ▁gone ▁from ▁a ▁single ▁front ▁bra ke ▁disc ▁ 3 0 0   mm ▁in ▁carbon ▁steel ▁to ▁a ▁single ▁bra ke ▁in ▁carbon , ▁with ▁a ▁diameter ▁of ▁ 2 7 5   mm ▁disc ; ▁in ▁ 2 0 0 0 ▁the ▁bi ke ▁returned ▁to ▁a ▁double ▁disc ▁front ▁bra king ▁system ▁. ▁ ▁Since ▁ 2 0 0 7 , ▁the ▁bi ke ▁is ▁available ▁in ▁a ▁new ▁version , ▁called ▁R SA ▁ 1 2 5 , ▁for ▁some ▁rid ers . ▁The ▁R SA ▁has ▁many ▁new ▁details ▁than ▁the ▁previous ▁model , ▁including ▁improvements ▁in ▁the ▁int ake ▁system ▁and ▁the ▁engine . ▁The ▁old ▁version , ▁with ▁some ▁updates ▁from ▁the ▁R SA , ▁is ▁still ▁used