This is a new D.I.D. brand 25H x 104L link timing cam chain. This fits the 1986-1988 Yamaha YFM 225 Moto-4 ATVs. The D.I.D brand is known for its superior quality making it the number 1 ATV chain sold. Don't miss out on this great quality affordably priced product! These parts are made to meet or exceed Honda OEM specifications. This will include a FREE G&H DISCOUNT ATV SUPPLY DECAL!! We offer most parts to completely rebuild your model, so please check out our store or give us a call.