Not approved on public roads, only reserved for competition, does not respect the highway code in any way!
Here is the ATHENA Replica 80cc Ø50mm kit, this famous cylinder has taken the mold and the architecture of the famous ATHENA kit with exhaust valve! This kit is made of good quality aluminum with a very high end nykasil chrome treatment, the finish is excellent. The diagrams are also very good, this kit is wedged between torque and high speed, but unlike the other kit (ATHENA with valve), this one is removed from the valve exhaust system.
 

 
This kit is known to do a lot of miles for an aluminum, certainly even the strongest aluminum that has been seen on am6 in 80cc. Its piston is in mono segment end hard chrome domed to allow the highest speeds and avoid friction. The cylinder head has a high polished tapered compression chamber. The seals are also of excellent quality, ATHENA is also a large seal manufacturer and recognized throughout the world. The exhaust has a special anti-wear / improved scavenging shape.
 In conclusion, it is a very solid and efficient aluminum kit that can be used for driving every day (except France because it is not approved for road), for stunts, etc. Aesthetic level, it is relatively sober, it takes the original shape in a cleaner, beautiful metallic gray and it is marked ATHENA in 3D. We will also really appreciate the several base joints in order to polish your squish, moreover for beginners, the instructions explain how to make the squish and understand it. We recommend it with at least: reinforced bearings, reinforced crankshaft, 21mm carburetion, racing exhaust, cold competition spark plug
 

Characteristics:
 Bore (Ø cylinder): 50mm
 Displacement: 80cc in 39mm stroke (original)
 Compression ratio: 13.9: 1
 The pack contains:
 -cylinder 5 normal exhaust transfers in chrome treated aluminum from nykasil d.50mm
 - high quality chrome domed end segment d.50mm
 -piston mono segment reinforced d.50mm
 - reinforced piston pin (original diameter)
 -clips (axis rods) in C
 -pack full reinforced seal
 -exhaust wedge (euro 1 to 2)
 - cylinder head screws
 -tapered cylinder head d.50mm high compression polished chamber
 -sticker
 - ATHENA booklet
 -ATHENA assembly instruction in French / Spanish / Italian / English
 

 
As an option we offer you a stage 1 preparation, this preparation is a modification of the channels and the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the piston and the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
 Mounts on 50cc motorcycles with gearbox equipped with the minarelli am3, am4, am5, am6 euro 1, am6 euro 2 engine:
 APRILIA RS 50cc am6 engine from 1997 to 2006 (new attention after 2006 in derbi euro 3 engine)
 APRILIA RX am6 engine (attention news after 2006 in derbi euro 3 engine)
 APRILIA MX am6 engine (attention news after 2006 in derbi euro 3 engine)
 APRILIA TUONO 50cc am6 engine from 1997 to 2006 (new attention after 2006 in derbi euro 3 engine)
 BETA RR
 BETA RR ALU
 BETA CRE
 HONDA HM
 HONDA CRE
 HONDA BAJA
 HUSQUVARNA WXE
 HUSQUVARNA CH
 HM DERAPAGE
 HM CRE
 MALAGUTI DRAKON
 MALAGUTI XTM
 MALAGUTI XSM
 FANTIC CABALLERO
 PEUGEOT XP6
 PEUGEOT XPS
 MOTORHISPANIA RYZ
 PEUGEOT XPS
 PEUGEOT XP STREET
 PEUGEOT XP STREET EVO
 PEUGEOT XR6
 MOTORHISPANIA RX
 PEUGEOT XR7
 MOTORHISPANIA RX-R
 RIEJU RS1
 RIEJU RS2
 RIEJU RS2 MATRIX
 RIEJU RS2 MATRIX PRO
 RIEJU SMX
 RIEJU MRX
 RIEJU SPIKE
 KEEWAY TX FR
 YAMAHA DT
 MBK X-LIMIT
 YAMAHA TZR
 MBK X-POWER
 SHERCO SM
 SHERCO ENDURO
 SHERCO HRD
 SHERCO ENDURO
 And many other machines ...