Best Gt Union Roller 2026

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Last Updated - 27.03.2026

Best Choice

01

2EXTREME

2EXTREME ECU CDI 50 cc Open 4-Stroke EURO4 + 5 Efi China Scooter Hardware Store GT Union

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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2EXTREME ECU CDI 50 cc Open 4-Stroke EURO4 + 5 Efi China Scooter Hardware Store GT Union

121,58 €
02

Casabike

EURO 4 Alternator 45 km/h Ignition Pole Wheel Stator 139QMA/B GY6 50cc Scooter Znen Benzhou Easy Cruiser Burnout Alpha Motors Firenze Casabike Torino Lexmoto Valencia Techno Classic GT Union Nova

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Retro scooter: Znen, Benzhou, Easy Cruiser, Burnout, Alpha Motors, Firenze, Casabike, Nova, Torino, GT Union, Strada, Techno Classic, Minime, Retro Star, Bondini, Venus, Fosti, Venti, Tech Flex, Razory, Benero and many models. Specification/dimensions: - 50 cc with 45 km/h Euro 4 GY-6 China 4T scooter. Note: Please carefully check the number of coils and plugs before purchase, it is worth checking the dimensions carefully so as not to make a mistake when purchasing. ZN50QT-G, ZN50QT-E, ZN50QT-K, ZN50QT-H, ZN50QT-E2 ZN50QT-7, ZN50QT-27, ZN50QT-A, HT50QT-29 and many scooter models. Please compare with your old part before purchasing. !
Please note: Only buy our original parts. and no replica spare parts from other suppliers, even if the look loud photo. We recommend the installation of high-quality original spare parts only, please compare with your old part before purchasing. as there can be different versions. Thank you...
Box contents: 1 x alternator with pole wheel (see image)

67,70 €
Value for Money

03

2EXTREME

2EXTREME Lambda Sensor Compatible with Nova Motors Retro Cruiser, Grace, City Star, Retro Star and GT Union Strada 50 4T Scooter

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Safe operation: a working lambda sensor prevents engine damage caused by faulty mixture regulation and ensures a longer engine life.
QUALITY GUARANTEE: Trust in the high manufacturing quality of 2EXTREME to ensure the durability and reliability of your scooter motor.
EFFICIENT EXHAUST GAS CONTROL The original RONGMAO lambda sensor ensures precise control of the fuel-air mixture to optimize the performance of your scooter.
EASY REPLACEMENT The lambda sensor comes with a 4 pin connector and is easy to install
COMPATIBILITY Designed for GY6 Euro 4 and Euro 5 engines, ideal for a variety of models

48,79 €
04

2EXTREME

2EXTREME Injector for Euro 4/5 Scooter Compatible with Nova Motors City Star, Retro Cruiser, Rivero Toscana, GT Union Strada

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9.3

Excellent

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This high quality injector ensures clean engine running and prevents potential engine damage caused by defective injection systems.
Reliable quality from 2EXTREME ensures that the injection works effectively and thus optimises engine performance.
Note: Works only with RONGMAO ECU systems. Not compatible with Motion ECU.
EASY REPLACEMENT The injector is equipped with a 2 pin connector and comes ready to use.
Compatible with 4-stroke scooters that have Euro 4 or Euro 5 engines and are equipped with Rongmao direct injection system.

57,12 €
05

Area1

Area1 Converter + Kpplung + Bell for 50cc China 4-Stroke Scooter GY6 139QMB/QMA AGM Nova Alpha Motors Direct Bikes Dafier ATU Explorer Flex-Tech GT Union Guoben Vanguard Yiying Hongzhou Lingtian

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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The complete unit is pre-assembled and only needs to be attached to the transmission input shaft.
Matching tools and accessories can be found below.
High-quality replacement converter set from the German top brand Area1, consisting of a complete converter unit including 3-jaw coupling (107 mm) and clutch bell.
Can be used on all scooters with 50cc China 4-stroke engine. All suitable vehicles can be found in the vehicle list, which can be found above in the product images.
All parts in OEM quality, no tuning parts. Ideal for a quick and affordable general overhaul.
A defective converter unit is characterised by frequently tearing V-belts and abrupt performance holes (V-belt slips through).

45,10 €
06

Casabike

Ignition Coil 50 cc Euro 4 Scooter Retro Scooter Znen Lexmoto Valencia Fox Rex Benzhou City Star Nova Easy Cruiser Burnout Alpha Motors Firenze Casabike Nova Emco Torino GT Union Retro Star

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Product description: We offer an ignition coil for your scooter. ZN50QT-E, ZN50QT-K, ZN50QT-15, ZN50QT-H, ZN50QT-E2, ZN50QT-27, ZN50QT-F, ZN50QT-7, ZN50QT-E5, ZN50QT-A, and many scooter models.
Please note: !!! Buy only our original parts! !!!!! and no replica spare parts from other suppliers, even if the look loud photo. We recommend for only the installation of high-quality original spare parts, please compare with your old part before purchasing. as there can be different versions. Thank you...
Ignition coil for 50 cc Euro 4 suitable for 45 km/h and for moped 25 km/h retro scooter ZNEN Casabike, Nova and China scooters
Box contents: - 1x ignition coil (see image). The counterpart, the 2-pin.

37,40 €
07

Casabike

Tyres All Weather 51J TL Retro Scooter A-Line Casabike Tyre Set 3.50-10 & 3.50-10 (M+S) Front and Rear Scooter

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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2 x all-weather tyres tubeless (tubeless), 1 x for front - 1 x for rear tubeless for your retro scooter, scooter, China scooter

62,60 €
08

Area1

Area1 Air Filter Insert for 50 cc 4-Stroke with 12 Inch Wheels Compatible with REX RS400 RS450 RS460 RS 500 RS 600 RS700 RS750 RS900, RS Classic Capriolo QM50QT Imola Milano, Monaco, Monza, L5Y/WS1

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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The replacement air filter insert matches the air flow rate of the factory fitted air filter and is suitable for all scooters with China 4 stroke engine.
Replacement OEM quality air filter insert for China 4 stroke scooter GY6 QMA QMB with 12 inch rear wheel
Air filters should be replaced regularly as a dirty air filter reduces the efficiency of the engine and increases fuel consumption.

8,39 €
09

Area1

Area1 Replacement Carburettor 18 mm for 50 cc China 4-Stroke Scooter Compatible with GY6 139QMB/QMA AGM Nova Alpha Motors Direct Bikes Dafier ATU Explorer Flex-Tech GT Union Guoben Vanguard Yiying

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Technical data: 18 mm carburettor / main nozzle 77 (M4) / secondary nozzle 33 / ready to install including electric choke. Intake manifold: 28 mm + connection width air filter: 38 mm. Carburettor is pre-tuned for 50cc models.
Suitable for scooters with 50 cc 4-stroke engine from China. All suitable vehicles can be found in the vehicle list, which can be found in the product images.
Please check the connection widths before purchase and whether your vehicle is also included in the vehicle list.
IMPORTANT: It is not guaranteed that the engine will run perfectly with the specified tuning. If the tuning of the main nozzle does not fit your scooter, we recommend using the main nozzle from your current carburettor! In case of problems, it is easiest to control the colouring of the spark plug. The centre electrode should not be too wet (main nozzle too large) or too dry (main nozzle too small) and ideally have a fawn brown colour.
High-quality replacement carburettor from the German top brand Area1, which stands for high-quality scooter parts!

41,95 €
10

Area1

Tuning Racing CDI GT Union Strada 125, GT Union Tempesta 125, GT Union Veloce 125 (4-Stroke)

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8.0

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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This open racing CDI increases the final speed depending on the model by approx. 5-15 km/h and should be your first choice for tuning measures. The Racing CDI adjusts the ignition timing depending on the speed. Compared to the open/sport CDI, acceleration, start and final speed are also slightly improved.
The CDI is the most important throttle on the scooter, with which speed and final speed are consistently reduced.
Installation: pull old CDI out of the plug, plug in the new one, done!
Important: This CDI only works on models with 4-stroke engine. Please compare plugs with picture, as some models have different CDIs installed. Plugs must be identical. (Double plug 4+2 pins).
Further details and screwdriver tips see below in the item description.

23,09 €