NHTSA service bulletin

NHTSA Service Bulletin 10191958: 2021 Aprilia Rs 660

Official manufacturer communication context for 2021 Aprilia Rs 660, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10191958 summary graphic for 2021 Aprilia Rs 660
10191958NHTSA document ID
Service campaigncommunication type
2affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

Aprilia RS 660 and Tuono 660: Exhaust valve clearance - Technical update - Campaign Code: PA0ZZQ2101_Stock-PA0ZZQ2101_Sold Dear Dealer / Service Center, through the ongoing, stringent quality control activities we perform on the components installed on our vehicles and our continuous research to develop better new technical solutions, in keeping with our commitment to ensure the best ownership experience possible for the customer, it has come to our attention that it is necessary to check and, if necessary, correct the exhaust valve clearance on the aforementioned vehicles to prevent the possibility of valve noise during engine operation. During this procedure, the special screw with seal of the timing chain tensioner and the oil plug with seal must be replaced with new parts. Please determine which vehicles in your stock or sold by you require this update, and: Update all vehicles in stock before sale .

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
ApriliaRs 6602021Ask for service records and run the exact VIN before purchase.
ApriliaTuono 6602021Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10191958?

Aprilia RS 660 and Tuono 660: Exhaust valve clearance - Technical update - Campaign Code: PA0ZZQ2101_Stock-PA0ZZQ2101_Sold Dear Dealer / Service Center, through the ongoing, stringent quality control activities we perform on the components installed on our vehicles and our continuous research to develop better new technical solutions, in keeping with our commitment to ensure the best ownership experience possible.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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