RAREELECTRICAL Piston Ring Set Compatible With 1985-1989 Honda Atc250r Trx250r Fourtrax 249Cc 2-Stroke Liquid-Cooled Atv +0.50Mm 66.50Mm Bore Replaces 51-205-05 13104-Hb9-305 13104-961-003

HONDA ATC250R & TRX250R FOURTRAX 249cc 2-STROKE (1985-1989): ATC250R Honda 249cc 2-Stroke Liquid-Cooled Single Cylinder (1985-1986) TRX250R FourTrax 250R Honda 249cc 2-Stroke Liquid-Cooled Single Cylinder (1986-1989) OEM PART NUMBERS: Honda (ATC250R .50mm over): 13104-HB9-305 / 13104HB9305 Honda (TRX250R .50mm over): 13104-961-003 / 13104961003 WSM Aftermarket: 51-205-05 Piston Ring Set — Honda ATC250R / TRX250R 249cc 2-Stroke, +0.50mm 66.50mm: Replacement piston ring set for the Honda 249cc 2-stroke liquid-cooled engine used in the ATC250R (1985-1986) and TRX250R FourTrax (1986-1989). This is a +0.50mm oversize ring set for 66.50mm bored cylinders. Standard bore is 66.00mm. Ring set only — does not include piston, wrist pin, or clips. Cylinder must be professionally bored or honed to 66.50mm before installation. ⚠️ IMPORTANT: Measure cylinder bore before ordering. Verify OEM part number from your engine.

• Compatible with HONDA. Please verify your OEM part number from your original unit to help ensure fitment.
• Replaces: Oem Part Numbers: / Honda (Atc250r .50Mm Over): 13104-Hb9-305 / 13104Hb9305 / Honda (Trx250r .50Mm Over): 13104-961-003 / 13104961003 / / Specifications: / Type: Piston Ring Set (Rings Only — No Piston, No Pin, No Clips) / Bore Size: 66.50Mm (+0.50Mm Oversize) / Standard Bore: 66.00Mm / Oversize: +0.50Mm / Engine: 249Cc 2-Stroke Liquid-Cooled Single Cylinder / Condition: New / / Applications Summary: / Honda Atc250r 249Cc 2-Stroke (1985-1986) /
• Applications: Honda Atc250r — 249Cc 2-Stroke Liquid-Cooled Single Cylinder (1985-1986): / Atc250r Honda 249Cc 2-Stroke Liquid-Cooled Single Cylinder (1985-1986) / / Honda Trx250r Fourtrax — 249Cc 2-Stroke Liquid-Cooled Single Cylinder (1986-1989): / Trx250r Fourtrax 250R Honda 249Cc 2-Stroke Liquid-Cooled Single Cylinder (1986-1989) / / Note: +0.50Mm Oversize Ring Set / Standard Bore: 66.00Mm | This Ring Set: 66.50Mm (+0.50Mm Over) / Cylinder Must Be Bored Or Honed To 66.50Mm
• Applications: Honed To 66.50Mm Before Installation / Always Measure Cylinder Bore Before Ordering — Verify Your Bore Size / ...
• Piston Ring Set - Bore: .5 mm Over Source: Aftermarket