 Meeting noise level requirements has never been an issue.The DT200R shares similar engine cases with the ATV BLASTER - But the Blaster is not crank case induction like the DT200R.Both DT200R & Blaster crank shafts are compatible, the DT200R piston doesn't have port's like the Blaster, but the Blaster piston can be used with the DT200R.