1 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
21V502000 · Engine
Reported: 2021-07-01 (July 1, 2021) · Model years: 2021
Aprilia is recalling certain 2021 RS 660 and Tuono 660 motorcycles. The engine crankshaft connecting rod may break due to improper heat-treatment.
Consequence: A broken connecting rod can cause a sudden engine stall, increasing the risk of a crash.
Remedy: Dealers will replace the engine, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact Aprilia customer service at 1-212-380-4400. Aprilia's number for this recall is PA2ZZQ2107.
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
7 unique complaints in this selection. Analysis snapshot: 2026-10-01.
57.1%Usable mileage4 / 7 records
100.0%Valid incident date7 / 7 records
100.0%Valid filing date7 / 7 records
100.0%Ordered incident and filing dates7 / 7 records
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
Component complaint heatmap
Component
2021
2022
2024
Engine
133.3%ODI 11419394 · 1,400 mi
The contact owns a 2021 Aprilia RS 660. The contact stated that while driving 75 MPH, the vehicle began to make an abnormal vibrating sound as the alarm pressure warning light illuminated. Due to the failure, the contact initially had the vehicle towed to his house, and then the dealer informed him that there was a fractured connecting rod in the engine. The dealer contacted the manufacturer who agreed to repair the failure under warranty. The vehicle remained in the possession of the dealer and was not yet repaired. The failure mileage was 1,4…
Motorcycle had a sudden engine knock causing catastrophic engine failure after going over a abutment. Issue found to be a broken connection rods. No warning lights, clear traffic, happened at 3:30 in the morning.
The contact owns a 2021 Aprilia RS660 motorcycle. The contact stated while riding at 80 mph on a closed track, the contact was approaching a left turn when attempting to brake but the electronic control unit of the braking system did not work which caused the motorcycle to cartwheel and crash landing on the contact from the right side. The contact fractured his collar bone and was taken by ambulance to the hospital for the injury. No police report was filed. The motorcycle was placed on the contacts trailer and was taken to their residence. The…
Electrical System: Integrated Trailer Brake Control
133.3%ODI 11431387 · 1,100 mi
The contact owns a 2021 Aprilia RS660 motorcycle. The contact stated while riding at 80 mph on a closed track, the contact was approaching a left turn when attempting to brake but the electronic control unit of the braking system did not work which caused the motorcycle to cartwheel and crash landing on the contact from the right side. The contact fractured his collar bone and was taken by ambulance to the hospital for the injury. No police report was filed. The motorcycle was placed on the contacts trailer and was taken to their residence. The…
The contact owns a 2021 Aprilia Motorcycle. The contact stated while riding 30 mph, the motorcycle abruptly stalled. The contact was able to restart the motorcycle and rode to the dealer. The contact had not received a diagnostic report. The contact stated that the motorcycle had been taken to the dealer for a recall repair on the same day that the failure occurred. The contact was not sure what recall repair was performed on the motorcycle. The motorcycle was not repaired. The manufacturer was not contacted. The failure mileage was 664.
So just got the bike and i was driving home. I noticed an issue going into second gear. Bike would actually go into neutral. Ended up getting the bike home after somehow getting it into second. When I noticed that the teeth on the input shaft by the quick shift sensor looks kinda ate up. Come to find out multiple people have had this issue.
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
Component failure mileage distribution
Component
Mileage range (25th–75th percentile)
Median
Usable records
Examples
Engine
Too few reports for a range
2,972 mi
2 (sparse)
ODI 11419394 · 1,400 mi
The contact owns a 2021 Aprilia RS 660. The contact stated that while driving 75 MPH, the vehicle began to make an abnormal vibrating sound as the alarm pressure warning light illuminated. Due to the failure, the contact initially had the vehicle towed to his house, and then the dealer informed him that there was a fractured connecting rod in the engine. The dealer contacted the manufacturer who agreed to repair the failure under warranty. The vehicle remained in the possession of the dealer and was not yet repaired. The failure mileage was 1,4…
The contact owns a 2022 Aprilia RS 660. The contact stated while riding at approximately 65 MPH, the engine began to vibrate violently, causing the motorcycle to be difficult to control. The contact stated that the motorcycle stalled and coasted to a stop on the side of the road. The contact stated that the oil warning light was illuminated. The contact attempted to restart the motorcycle several times however, there was no battery power, and the engine would not restart. The contact had the motorcycle towed to his residence and later he transp…
The contact owns a 2021 Aprilia RS660 motorcycle. The contact stated while riding at 80 mph on a closed track, the contact was approaching a left turn when attempting to brake but the electronic control unit of the braking system did not work which caused the motorcycle to cartwheel and crash landing on the contact from the right side. The contact fractured his collar bone and was taken by ambulance to the hospital for the injury. No police report was filed. The motorcycle was placed on the contacts trailer and was taken to their residence. The…
Electrical System: Integrated Trailer Brake Control
Too few reports for a range
1,100 mi
1 (sparse)
ODI 11431387 · 1,100 mi
The contact owns a 2021 Aprilia RS660 motorcycle. The contact stated while riding at 80 mph on a closed track, the contact was approaching a left turn when attempting to brake but the electronic control unit of the braking system did not work which caused the motorcycle to cartwheel and crash landing on the contact from the right side. The contact fractured his collar bone and was taken by ambulance to the hospital for the injury. No police report was filed. The motorcycle was placed on the contacts trailer and was taken to their residence. The…
The contact owns a 2021 Aprilia Motorcycle. The contact stated while riding 30 mph, the motorcycle abruptly stalled. The contact was able to restart the motorcycle and rode to the dealer. The contact had not received a diagnostic report. The contact stated that the motorcycle had been taken to the dealer for a recall repair on the same day that the failure occurred. The contact was not sure what recall repair was performed on the motorcycle. The motorcycle was not repaired. The manufacturer was not contacted. The failure mileage was 664.
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
Monthly complaint and recall timeline
Month
Complaints
Campaigns announced
Examples
2024-11
0
None
No examples available for this selection.
2024-12
0
None
No examples available for this selection.
2025-01
0
None
No examples available for this selection.
2025-02
0
None
No examples available for this selection.
2025-03
0
None
No examples available for this selection.
2025-04
0
None
No examples available for this selection.
2025-05
0
None
No examples available for this selection.
2025-06
0
None
No examples available for this selection.
2025-07
0
None
No examples available for this selection.
2025-08
0
None
No examples available for this selection.
2025-09
0
None
No examples available for this selection.
2025-10
0
None
No examples available for this selection.
2025-11
0
None
No examples available for this selection.
2025-12
0
None
No examples available for this selection.
2026-01
0
None
No examples available for this selection.
2026-02
0
None
No examples available for this selection.
2026-03
1
None
ODI 11721772
Motorcycle had a sudden engine knock causing catastrophic engine failure after going over a abutment. Issue found to be a broken connection rods. No warning lights, clear traffic, happened at 3:30 in the morning.
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2021: 2 complaints · 2022: 3 complaints
Equal observation windows
Model year
Through age 0
Through age 1
Through age 2
2021
2
2
2
2022
2
3
3
Date coverage across each selected cohort
Date basis for all complaints in selected model years
Year
Incident dates used
Filing date fallbacks
Excluded dates
2021
2
0
1
2022
3
0
0
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
Component co-occurrence matrix
Component
Engine
Electrical System
Electrical System: Integrated Trailer Brake Control
Engine And Engine Cooling
Power Train
Engine
—
0
0
0
0
Electrical System
0
—
1ODI 11431387 · 1,100 mi
The contact owns a 2021 Aprilia RS660 motorcycle. The contact stated while riding at 80 mph on a closed track, the contact was approaching a left turn when attempting to brake but the electronic control unit of the braking system did not work which caused the motorcycle to cartwheel and crash landing on the contact from the right side. The contact fractured his collar bone and was taken by ambulance to the hospital for the injury. No police report was filed. The motorcycle was placed on the contacts trailer and was taken to their residence. The…
Electrical System: Integrated Trailer Brake Control
0
1ODI 11431387 · 1,100 mi
The contact owns a 2021 Aprilia RS660 motorcycle. The contact stated while riding at 80 mph on a closed track, the contact was approaching a left turn when attempting to brake but the electronic control unit of the braking system did not work which caused the motorcycle to cartwheel and crash landing on the contact from the right side. The contact fractured his collar bone and was taken by ambulance to the hospital for the injury. No police report was filed. The motorcycle was placed on the contacts trailer and was taken to their residence. The…
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
2 patterns with matching reports.
Stalling or loss of power
3 mentions · 42.9% of complaints
Median mileage: 1,400 mi (3 usable records).
ODI 11419394 · 1,400 mi
The contact owns a 2021 Aprilia RS 660. The contact stated that while driving 75 MPH, the vehicle began to make an abnormal vibrating sound as the alarm pressure warning light illuminated. Due to the failure, the contact initially had the vehicle towed to his house, and then the dealer informed him that there was a fractured connecting rod in the engine. The dealer contacted the manufacturer who agreed to repair the failure under warranty. The vehicle remained in the possession of the dealer and was not yet repaired. The failure mileage was 1,4…
The contact owns a 2021 Aprilia Motorcycle. The contact stated while riding 30 mph, the motorcycle abruptly stalled. The contact was able to restart the motorcycle and rode to the dealer. The contact had not received a diagnostic report. The contact stated that the motorcycle had been taken to the dealer for a recall repair on the same day that the failure occurred. The contact was not sure what recall repair was performed on the motorcycle. The motorcycle was not repaired. The manufacturer was not contacted. The failure mileage was 664.
The contact owns a 2022 Aprilia RS 660. The contact stated while riding at approximately 65 MPH, the engine began to vibrate violently, causing the motorcycle to be difficult to control. The contact stated that the motorcycle stalled and coasted to a stop on the side of the road. The contact stated that the oil warning light was illuminated. The contact attempted to restart the motorcycle several times however, there was no battery power, and the engine would not restart. The contact had the motorcycle towed to his residence and later he transp…
Matching rule\b(stall\w*|loss of power|lost power|engine shut\w* off)\b
Warning lights and dashboard alerts
3 mentions · 42.9% of complaints
Median mileage: 2,972 mi (2 usable records).
ODI 11419394 · 1,400 mi
The contact owns a 2021 Aprilia RS 660. The contact stated that while driving 75 MPH, the vehicle began to make an abnormal vibrating sound as the alarm pressure warning light illuminated. Due to the failure, the contact initially had the vehicle towed to his house, and then the dealer informed him that there was a fractured connecting rod in the engine. The dealer contacted the manufacturer who agreed to repair the failure under warranty. The vehicle remained in the possession of the dealer and was not yet repaired. The failure mileage was 1,4…
The contact owns a 2022 Aprilia RS 660. The contact stated while riding at approximately 65 MPH, the engine began to vibrate violently, causing the motorcycle to be difficult to control. The contact stated that the motorcycle stalled and coasted to a stop on the side of the road. The contact stated that the oil warning light was illuminated. The contact attempted to restart the motorcycle several times however, there was no battery power, and the engine would not restart. The contact had the motorcycle towed to his residence and later he transp…
Motorcycle had a sudden engine knock causing catastrophic engine failure after going over a abutment. Issue found to be a broken connection rods. No warning lights, clear traffic, happened at 3:30 in the morning.