Part No. 40-3704.NITRO (oro2u.com)
REAR BRAKE DISC TRIALS NITRO MOTO-MASTER 110706.
BETA 125cc Evo 125 2009-and up BETA 200cc Evo 200 2009-and up BETA 250cc Evo 250 2T 2009-and up BETA 250cc Evo 250 4T 2009-and up BETA 290cc Evo 290 2T 2009-and up

BETA 300cc Evo 300 2T 2012-and up BETA 300cc Evo 300 4T 2009-and up
APROX SIZE. OD 160, ID 42.00, PCD 60.0, HOLES 4x6.5 STR, THICK 2.70mm