When I started tuning scooter I’ve asked myself numerous times: “Which exhaust is suited for my cylinder and what size of carb should I take? I don’t want to spend money on parts that don’t work well with my setup.” Over the years I’ve gained a lot of knowledge by reading as well as trial and error. To answer the questions I came up with a list of different tuning part profiles for matching setups. Read more to find out which tuning parts match each other and what might be the perfect setup for your next project. Enjoy the best 50cc Scooter Tuning Guide on the net!
How does it work?
Below you’ll find a list of tuning parts, each divided into profiles and categories (like cylinders, exhausts, etc.). The profiles help you to check which cylinders and exhausts match and what size carburetor is suited for those combinations. When you ride a cylinder that is found in Profile 2 you should stick with a carburetor and exhaust from the exact same category. Using a part from another category can perform worse and might even damage your engine (too small carburetor, e.g.).
Please note that we are talking about stock (unmodified) tuning cylinders. Porting (modifying) a cylinder from Profile 4, might improve its performance to a Profile 5 cylinder and therefore making it suitable for Profile 5 exhausts and carburetors.
Everything below should just be used as a guideline, therefore keep in mind that other combinations might work too.
50cc Scooter Tuning Guide Profiles
Scooter Tuning Profile 1
| Cylinders | Exhausts | Carburetors |
|---|---|---|
| Original 50cc | Original | Original (12mm / 14mm) |
| Polini 50cc cast iron | Sito + | 17.5mm Dell’Orto |
| Malossi 50cc cast iron | Giannelli Nardo / Shot | |
| Hebo 50cc cast iron | Giannelli Nr-X (Minarelli) | |
| TopPerformances 50cc cast iron (Minarelli) | Giannelli Pro 6 / Pro Cee | |
| DR 50cc cast iron (Minarelli) | Giannelli Reverse | |
| Polini For Race | ||
| Polini Funky | ||
| Doppler | ||
| Yamashi S2 | ||
| Yasuni Z | ||
| Yasuni R | ||
| Leo Vince Sprinter | ||
| Leo Vince ZX | ||
| Bidalot S2 | ||
| Hebo Gara / 104 | ||
| Tecnigas Next / R | ||
| Tecnigas Basic | ||
| Kundo Kinetic | ||
| Metra Kit / Metra Kit Series II | ||
| Arrow Basic | ||
| Arrow Performer | ||
| Samba | ||
| R-Force | ||
| Stage6 Pro Replica |
Scooter Tuning Profile 2
| Cylinders | Exhausts | Carburetors |
|---|---|---|
| Polini Evolution 50cc alu | DPR (50cc spec) | 17.5mm Dell’Orto |
| Malossi MHR 50cc alu | Yasuni Carrera 20 | 19mm Dell’Orto |
| Malossi MHR Team 50cc alu | Bidalot Carrera 20 | 21mm Dell’Orto |
| Hebo Alu NG 50cc alu | Polini Evolution 50 | 24mm Mikuni |
| Stage6 50cc alu | Malossi MHR Team 50 |
Scooter Tuning Profile 3
| Cylinders | Exhausts | Carburetors |
|---|---|---|
| Polini 70cc cast iron | Polini For Race | Original (12mm / 14mm) |
| Polini 70cc Corsa cast iron | Yasuni R | 17.5mm Dell’Orto |
| Malossi Sport 70cc cast iron | Giannelli Nardo / Shot | 19mm Dell’Orto |
| Hebo 70cc cast iron | Hebo Gara / 104 | 21mm Dell’Orto |
| Airsal 70cc alu | Metra Kit Sport Production | |
| TopPerformances Trophy 70cc cast iron | Hebo 70cc Competition | |
| DR 70cc cast iron | Bidalot S2 | |
| Metra Kit 70cc cast iron | Stage6 Pro | |
| Stage6 Street Race 70cc | Tecnigas RS70 | |
| Stage6 Sport Pro 70cc | Laser X-pro |
Scooter Tuning Profile 4
| Cylinders | Exhausts | Carburetors |
|---|---|---|
| Malossi MHR Replica 70cc alu | Polini For Race | 17.5mm Dell’Orto |
| Hebo Alu NG 70cc alu | Polini Evo Cross | 19mm Dell’Orto |
| Hebo Alu / Athena / Eurocilindro 70cc alu | Polini Evo 5 / 6 / 7 / 8-serie | 21mm Dell’Orto |
| Gilardoni 70cc alu | Giannelli Nardo / Shot | 24mm Mikuni / TopPerformances |
| Polini Alu W 70cc alu (Piaggio) | Yasuni R | |
| TopPerformances Due Plus 70cc cast iron (Minarelli) | Yasuni / Bidalot Carrera 16 | |
| Athena (T-port) 70cc alu | Hebo Racing I | |
| Hebo (T-port, old type) 70cc alu | Jolly Moto | |
| Metra Kit Sport Production 70cc alu | Jolly Moto SP | |
| Airsal T6 70cc alu | Arrow Limited Series | |
| Stage6 Racing 70cc (MKII) | Stage6 R1200 | |
| TJT Racing (Piaggio) | ||
| Tecnigas RS70 |
Scooter Tuning Profile 5
| Cylinders | Exhausts | Carburetors |
|---|---|---|
| Metra Kit Pro Race | Malossi MHR Team 70 | 19mm Dell’Orto [Black Edition] |
| Metra Kit Pro Race 2 | Malossi MHR Team 2000 | 21mm Dell’Orto [Black Edition] |
| Malossi MHR 70cc | Malossi MHR Team 2004 (Piaggio) | 25mm Dell’Orto |
| Malossi MHR Team 70cc | Malossi MHR Team 2006 (Minarelli) | 26mm Dell’Orto |
| Malossi MHR Team 7T 70cc | Polini Evolution 5-serie | 28mm Dell’Orto |
| Malossi MHR Team 7T – Factory Tuned 70cc | Polini Evolution 6-serie | 24mm TopPerformances / Mikuni Flatslide |
| Malossi MHR Speed Replica 70cc (Piaggio) | Yasuni / Bidalot Carrera 16 | 28mm Keihin / Hebo |
| Malossi MHR Cross 70cc | Yasuni / Bidalot Carrera 20 | 28mm OKO / Koso |
| Polini Evolution 70cc | Yasuni / Bidalot Carrera 21 | Ibea (Kart carb, different sizes) |
| Polini Evolution 2 70cc | Yasuni / Bidalot Carrera 30 | HHC (Kart carb, different sizes) |
| Polini Evolution 3 70cc | Hebo Racing II | Tillotson (Kart carb, different sizes) |
| Polini BIG Evolution (85mm conrod) | Hebo Racing IV | Baroni (Kart carb, different sizes) |
| Hebo Manston 70cc | Metra Kit Pro Race | JHC (Kart carb, different sizes) |
| Hebo Manston 2 70cc | Metra Kit Pro Race 2 | |
| Stage6 R/T 70cc | DPR (70cc editions) | |
| TJT Racing (Minarelli) | Stage6 R1400 | |
| XSH ROOST 70cc exhaust |
Scooter Tuning Profile 6
| Cylinders | Exhausts | Carburetors |
|---|---|---|
| 2Fast4Race (78cc; 47,6mm x 44mm)* | Malossi MHR Team 2004 / 2006 (Piaggio) | 28mm Dell’Orto |
| 2Fast4Race (86cc; 50mm x 44mm) | Malossi MHR Team 2006 (Minarelli) | 28mm Keihin / Hebo |
| TCR; Team Cristofolini Racing (80cc; 47,6 x 45mm) | Malossi MHR Team Big Bore | 28mm OKO / Koso |
| TCR; Team Cristofolini Racing (90cc; 50mm x 46mm)* | Yasuni / Bidalot Carrera 21 | 30mm OKO / Koso |
| Malossi Big Bore Kit (77cc; 50mm x 39,3 / 39,2mm)* | Yasuni / Bidalot Carrera 30 | 32mm OKO / Koso |
| Malossi Big Bore Kit (86cc; 50mm x 44mm)* | JS DPR | 33mm Keihin PJ |
| Polini Big Bore Kit (83cc; 52mm x 39,2mm / 39,3mm)* | TRT 2Fast | 34mm OKO / Koso |
| Polini Big Bore Kit (93cc; 52mm x 44mm)* | Team Cristofolini | Ibea (Kart carb, different sizes) |
| XSH ROOST 77cc / 86cc | HHC (Kart carb, different sizes) | |
| Polini BIG Evolution | Tillotson (Kart carb, different sizes) | |
| Baroni (Kart carb, different sizes) | ||
| JHC (Kart carb, different sizes) |
*Bore x Stroke
What setup do you ride? Have you also created setup profiles and know which parts work well together? Let us know in the comments below or post in the forum!