Introduced in 1992 with a twenty-year production run, the RS125 was what European teenagers dreamed of when growing up thanks to the sportsbike looks and sensation despite the diminutive engine and restricted-license-friendly output numbers. It got a revised Rotax motor in 1996 and a facelift in 1999.
The 124.8 cc engine produced 11 kW (15 hp) in stock form, though once de-restricted it could easily put out twice that number. MCN states “For most of the 1990s, Aprilia’s RS 125 was the must-have 125cc bike – both the hottest and coolest thing a 17-year-old could plaster a tatty L-plate on. A potent, shrieking banshee of a water-cooled two-stroke motor, wrapped in a gorgeous aluminium twin-spar frame, blessed with credible chassis components, a full-size riding position and a sleek, sporty fairing.”
“All of that desirability was multiplied several times over by its Italian exotica kudos and genuine Grand Prix pedigree – and even more so after a pimply 18-year-old called Valentino Rossi won the 125GP title in 1997. Owning an Aprilia RS125 was as good as things got, a universal badge of honour. It was also a great leveller, its desire cutting across classes. From rich kids swanning about on Daddy’s showroom-fresh minter to hard-charging chavs terrorising town-centres on rattle-can lash-ups, all across Europe young riders aspired to Aprilia’s RS125 in astonishing numbers.”
Aprilia offered several liveries for the RS125, but one of the most notable was the “Chesterfield” replica, a tribute to Max Biaggi’s championship-winning RSW250 GP bike.
This example is VIN: ZD4MP0000V00158. The seller acquired it from a private party in April 2025 through an Iconic Motorbikes auction.
During his ownership, the seller has covered roughly 400 kilometers. The odometer shows 6,899 kilometers (4,286 miles)
“I purchased the Aprilia RS125 Max Biaggi Chesterfield from Iconic last year. It was a bike I had always wanted since I was a kid, so when I saw it listed, I had to have it. When it arrived, I could tell it wasn’t completely original, but over the past year I’ve actually enjoyed sourcing the correct original parts and bringing it back to its original state. In many ways, the restoration process has been more enjoyable for me than riding the bike itself. I’m not really a collector, and now that I’ve scratched that itch and the bike is much closer to original specification, I feel it’s time for it to go to someone who will really appreciate it.”
Maintenance:
“I’ve made a few improvements, including installing period-correct decals, sourcing the correct pillion seat, windshield, and fitting new tires.”
In preparation for the listing, the seller had us replace the parking light bulb, flush the hydraulic fluids, and perform a safety inspection. Our service department notes the following on their condition report:
Gas Tank Internal Condition: Ok
Engine Oil Level: Ok
Engine Oil Quality: Ok (Age Unknown)
2T Oil Level: N/A
Coolant Level: Ok
Coolant Quality: Ok (<0.15V)
Front Hydraulic Fluid Level: Ok
Front Hydraulic Fluid Quality: New, <1.5 % Moisture
Rear Hydraulic Fluid Level: Ok
Rear Hydraulic Fluid Quality: New, <1.5 % Moisture
Clutch Hydraulic Fluid Level: N/A
Clutch Hydraulic Fluid Quality: N/A
Final Drive Condition: Ok
Headlight High Beam: Ok
Headlight Low Beam: Ok
Passing Light: N/A
Parking Light: Ok
Turn Signals: Ok
Tail Light: Ok
Brake Light (Front Switch): Ok
Brake Light (Rear Switch): Ok
Plate Light: Ok
Horn: Ok
Kill Switch: Ok
Brake Pad % Remaining Front: 90%
Brake Pad % Remaining Rear: 90%
Forks: Ok
Shock/s: Ok
Tire Date Code Front: 25/24
Tire Date Code Rear: 26/24
Tire % Remaining Front: 95%
Tire % Remaining Rear: 95%
Tire Press. Front: 34 PSI
Tire Press. Rear: 36 PSI
Battery Standing Voltage: 12.66V
Charging Voltage @ 4k RPM: 13.90V
Running Condition: Runs Well on Bench
Test Ride Completed: Yes
Test Ride Distance: 3 km, operates as designed
Notes:
-Cosmetic Imperfections:
-Small marks on RH tail section, LH fuel tank, fairing and belly pan
-Air Filter is ok
-Stainless steel expansion chambers
-MRA Pattern Screen
Modifications:
JL Exhaust.
VForce3 Moto Tassinari reed valve system.
Domino grips.
MRA windscreen.
Battery tender lead.
Inside of the tank:
It is riding on Pirelli Diablo Rosso IV tires with date codes of 2524 and 2624.
The sale includes one key.
Cosmetic Blemishes: please see the album up top for all known cosmetic blemishes. Here is a selection:
Currently located in Panorama City, California, this Aprilia is offered on a clean California title with registration current through August 2026.
Have any RS125 stories or questions about this listing? Let us know in the “Comments” tab!
