Polini CP 19
SKU 201.1901 · Ø25 / Ø46 mm
…Checking availability…
View product ↗MV21 selection guide · Derbi D50B0 Euro 4
Your Senda.
The next step.
Two starting points: keep the 50 cm³ cylinder or choose 70 cm³ Sport. Parts, price and the complete kit in your cart, all here.
Senda Euro 4 · from 201850 → 70 cm³2T · liquid-cooled
Choose my kit ↘
DERBI EURO 4The right head. The right electronics.
01
Start with the motorcycle
Which Senda do you have?
This selection is for Senda D50B0 Euro 4 models from 2018 with the original engine and electronics.
Choose the model and engine base.
02
How big a step do you want to take?
50 to start. 70 for more power.
Product prices. Installation and tuning are not included. Both tuning options are intended for closed-track use.
03
All in one place
Your Euro 4 kit.
Before adding to cart
If you need help, you can send us your selection below the summary.
04
When you want the next step
Intake, filter and sports ignition.
The base kits retain the original intake. These upgrades require a separate conversion, matching the connections and Euro 4 electronics.
19 mm carburettor and sports filter
The manufacturer recommends a 19 mm carburettor for the Naraku 70 cylinder. The Polini CP 19 and this filter have matching Ø46 mm connections. The conversion also needs a suitable manifold, choke and connections; the two products below alone do not form a complete intake kit.
Polini sports filter
SKU 203.0097 · Ø46 mm · 115 × 80 mm
…Checking availability…
View product ↗MVT sports ignition with lighting output
MVT Premium PREM29
SKU MVT-PREM29. Manufacturer’s specification: Derbi E4/E5 with a balance shaft, 55 W lighting output. This is a complete ignition conversion. We do not automatically combine it with the kit’s ECU/CDI; the electronics of the specific motorcycle must be checked first.
…Checking availability…
View product ↗05
Short and useful
What else should you know?
Does this also fit Euro 5?
For some parts, such as MVT PREM29, the manufacturer lists E4/E5. This does not confirm compatibility of the entire kit. If your documents state Euro 5, send photos of the model and engine / ECU markings so we can identify the required version.
Help me identify Euro 5 ↗Do I need to buy anything twice for the 50 kit?
No. Premium 38420 already includes an ECU/CDI, exhaust front section, jets, BR10ES plug and 14-tooth sprocket. Install the entire kit according to the instructions. It is designed for the original 50 cm³ engine, not for combining with the 70 cm³ selection.
Why does the 70 kit retain the original carburettor?
Naraku allows the original carburettor with adjusted settings. This offers a simpler starting point while retaining Euro 4 intake control. A 19 mm carburettor and sports filter are the next conversion. One universal jet will not suit every setup.
Is a temperature sensor adapter needed?
The selected Naraku NK103.74 head has a thread suitable for the Euro 4 sensor. We do not add a Euro 3 head adapter to this kit.
What about the clutch and drivetrain?
D50B0 has a manual gearbox and wet clutch. You can choose Derbi clutch plates as an add-on. Chain and sprockets are selected for the specific model; no variator or scooter belt is needed here.
What else does engine preparation involve?
Checking the crankshaft and bearings, correct lubrication, bleeding the cooling system and adjusting the fuel mixture. These jobs and any additional materials are not included in the product total.
How was the selection checked?
Kit products for five Senda Euro 4 versions were checked against the store’s fitment finder and manufacturer information. Prices and availability are loaded from the store. A specific Euro 5 kit is not yet confirmed.
