Wide:90mm,Length:170mm,Original Main Jet:K170,Original Solw Jet:K42 Engine side Out Diameter : 46mm/1.8″,Airfilter Out Diameter-Side: 63mm/2.4″ Universal 300 350 400 450 500 cc 2T 4T Engine Motorcycle Scooter UTV ATV Fits:TRX250R CR250 ATC250R LT250 LT500 YFZ350 YFZ 350 YZ250 YFM350 YFM450 YZ KX RM CR LT 250 500 380 and etc This Carb Gives You The Best All Round Performance From Excellent Low end To Ripping Fast Top End Power. I Recommend This Carb For All 250cc Or Larger ATV, Quad Or Dirt Bikes For Better Performance. You Will Have To Fine Tune The Jetting For Your Model. This Carb Has Basic Jets In It, It Is Not Pre-Jetted For Any Make Or Model. Features: Condition:100% New Specification: 170 Main Jet 55 Pilot Jet 48-DDJ Throttle Needle 7.0 Slide 46mm. OD Cylinder-Side 63mm. OD Airfilter-Side 91mm. Length Fits: Fitment: For Most of 250cc Or Larger ATV, Quad Or Dirt Bikes. TRX250R CR250 ATC250R LT250 LT500 YFZ350 YFZ 350 YZ250 and etc