Solex engine parts
Nut coupling M17x1.25 | Solex 3800
Material: Steel · Surface: galvanized (blue) · Area of application: Standard · Nut type: Hexagon flat nut · Thread type: MF17x1.25 (fine pitch thread) · Drive: External hexagon · Nominal diameter (thread): 17 mm · Height: 5.5 mm · Width across flats: 22 mm
EUR 4.80
Piston 40 mm oversize | Solex
Manufacturer: Made in France · Ø outside piston (A): 39.95 mm · Compression height (C): 18.3 mm · Curvature (D): 2.7 mm · Total piston height (E): 50.35 mm · Number of piston rings (F): 3 pcs · Nominal diameter: 40 mm · Piston ring mold: Rectangular ring · Piston ring impact: Straight joint · Piston ring height: 1.7 mm · Ø piston pin (B): 12 mm · Weight piston kit: 82 g
EUR 61.20
NTN 6203 LLU ball bearing 17/40/12 crankshaft | Solex
Bearing type: Deep groove ball bearing · Width: 12 mm · Inner ring width: 12 mm · Manufacturer: NTN · Ball bearing closed: Yes · Dust protection type: 2RS - NBR contact seal on both sides · Bearing clearance: CN (standard) · Bearing cage: Sheet steel cage ball-guided · Stock number: 6203 · Ø inside: 17 mm · Ø outside: 40 mm
EUR 11.70
Airsal 39.5 mm cylinder kit | Solex
Nominal diameter: 39.5 mm · Manufacturer: Airsal · Material: Aluminum · Camouflaged: No · Area of application: Tuning · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Surface: sandblasted · Ø piston pin (B): 12 mm · Number of fixing points: 4 pcs · Decompressor: Yes
EUR 214.40
Capacitor for screwing | Solex 2000, 3800, 5800
Area of application: Original · Area of application: Standard · Thread type: M3x0.5 (standard thread) · Mounting type: Tab for screwing · Height: 31 mm · Connection type: Thread for screwing · Ø outside: 19 mm · Ø mounting hole: 4.7 mm · Total height: 37 mm · SEV OEM number: 435 20 405 · SEV OEM number: 435 20 414 · Solex OEM number: 11 191 00 000
EUR 11.30
Page 1 of 4
Buy Solex engine parts online
Complete engine housings and engine parts for your Solex moped
Simple design, robust construction and the unique positioning of the engine housing - these are the characteristics that moped enthusiasts particularly appreciate about the mopeds made by Solex. It is no coincidence that the ‘nose warmers’ or ‘Christian chasers’ - as the iconic two-wheelers are affectionately known - are highly sought-after by collectors and attract attention on the road. However, even with these iconic mopeds with their proven technology, maintenance of the drive unit, occasional repairs and the replacement of defective engine parts are unfortunately part of the compulsory programme. The engine housing and drive unit are mounted directly above the front wheel on the Velosolex classics, which contributes significantly to their striking appearance. A friction roller transmits the power of the motor to the front wheel. This positioning of the power unit makes some of the necessary maintenance work easier, but also means a change, as not every engine part on this moped is in its usual place.
Replacing engine housings, cylinder base gaskets or engine parts - with the right equipment, you'll succeed
If there are problems with the engine of your Solex moped, you should not hesitate to check the engine thoroughly. If there are any defects, you should replace the affected engine parts or the engine housing as soon as possible. Fortunately, you can carry out most maintenance and repair work yourself, but you should not put off the necessary work. For example, defective piston rings can cause serious consequential damage to the engine and damage other engine parts. If you want to expand or improve your skills and abilities as a mechanic, you can carry out work on the engine housing or replace piston rings and ball bearings yourself. The advantages are obvious: if you do the work yourself, you will get to know your Solex moped and its engine parts better. This also saves a lot of pocket money. And you can invest the money you save in much better things: in stylish mouldings, cool accessories or grippy brake shoes for your Velosolex, for example. Regardless of whether you need a new clutch cover or a complete engine housing for your maintenance and repair work, are looking for cylinder base gaskets and ball bearings or need to replace a piston ring - you will find the right engine parts and the necessary tools in our range.
Looking for a new Velosolex exhaust?
The S-shape of your Velosolex exhaust is one of the characteristic features of this motorbike. The curved shape results from the special position of the engine and tank. The fact that the Solex designers positioned the engine housing above the front wheel takes some getting used to, but this distinctive engine mounting gives the motorbike a unique charm. If the exhaust on your Solex moped needs replacing, you can easily find a replacement in our range. We even have racing versions available for you if you have tuned your Solex moped or are planning to do so. In this context, you will also be interested in the practical cylinder kits that you will find in our selection of engine parts.
Select and order engine cases, piston rings and gasket sets conveniently at mofakult
Of course, the charming French pearl is particularly irresistible in its original condition. The striking silhouette and the design-related peculiarities make every Solex moped a real eye-catcher and particularly endearing. So it's no wonder that many owners of a Solex model do everything they can to keep their motorbike in its original condition. If this is also your wish, then you will find a huge selection of original parts in our range, from engine parts to original headlights and engine housings to parts for the ignition of your moped. Browse through our range and you'll be amazed. Order the engine parts, accessories, tools and lubricants or cleaning agents you need for your moped conveniently online and benefit from prompt delivery. Do you need advice or do you have questions about our range or individual products? Then don't hesitate to give us a call or drop us an e-mail. The team at mofakult will be happy to help and advise you.
Our favorite manufacturers
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
