CYLINDER KIT WITHPOWER VALVE SYSTEM

MINARELLI AM 6 Engine Ø 40 mm / 50 ccØ 50 mm / 80 cc

suitable for:

Bolt

On

PRONTO

ALL’USO

ATHENA is proud to be the first to present a Racing moped Cylinder kit with Exhaust Valve. This revolutionary Cylinder kit has been developed from ATHENA R&D department for the popular Minarelli AM6 engine in two displacements: 40mm – 50cc and 50mm – 80cc.The CYLINDER, made out of Aluminum alloy and plated with special Nickel Silicon coat, has been designed and developed in order to guarantee the highest performance ever seen in this category of cylinders.Its big water jackets guarantee best refrigeration, higher reliability and constant performance.The Exhaust Port is provided with Two Boost Ports and Power Valve System to obtain high torque and horsepower over a wider range of RPM.The cast-lite piston, with flat head and Molycote finishing, has been especially designed for this cylinder and tune to the cylinder head which has a very high compression ratio and squish area.

TECH

NICA

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P/N Ø 40mm: P400130100004P/N Ø 50mm: P400130100005

PRICE LIST € 450.00VAT EXCLUDED

PRICE LIST € 487.50VAT EXCLUDED

SPAR

E PA

RTS

Exhaust valve components (P/N P400130303001)

Closer view of the two cylinder heads re-spectively for the 40mm and 50mm bore

Cross section view of the cylinder which show the exhaust valve

DETA

ILS

Cylinder Kit Piston sel. A/BPiston Ring

Cylinder Head

Top End Gasket kit

Exhaust valve gasket

P40013010000440mm - 50cc

S410480302001.A/B 070016/R S410130308006 P400130160001 S410130021003

P40013010000550mm - 80cc

S4C05000003A/B S41316186 S410130308007 P400130160002 S410130021003

Fantic Caballero SM tuned by ATHENA in occasion of the PRESS DAY for the presentation of the Exhaust Valve Cylinder Kit

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ATHENA SUggESTS TO USE ALSO:

- P400130309001 Minarelli racing clutch case; - P400010444001 Crankshaft rebuilding kit (2 bearings SKF 6303TN9/C3 + 2 oil seals); - 075414 RACING crankshaft; - 062414 SPECIAL crankshaft; - P400130850204 Complete gasket kit;- P400130400204/1 Engine oil seals kit;- 009512 Intake reed valve;- 075705 Intake manifold for carburettor Ø 20/26;- 080006 Carburettor Dell’Orto PHBG 19 DS;- 070206 Carburettor Dell’Orto PHBG 21 BS DS;

The two-stroke Power Valve System varies the duration of the exhaust port open time, reaching excellent low RPM and top-end performances.ATHENA Power Valve System uses a guillotine valve moved by the pneuma-tic system, which exploits the exhaust gas pressure.At low RPM, when the exhaust gas has low pressure, the Power Valve is kept closed by a spring inside the pneuma-tic system.While increasing RPM, the pressure of the exhaust gas raises causing the pneumatic system to move the guilloti-ne valve upwards.

WHAT’S THAT?PNEUMATIC CONTROL SYSTEM

CONTRAST SPRINg

BLADE VALVE

40.3 mm

39 mm

49.7 cc

12:1

40 mm

39 mm

49 cc

17:1

CYLINDER BORE

STROKE

DISPLACEMENT

COMPRESSION RATIOTECH

NICA

L DAT

A Ø 40

50 mm

39 mm

77 cc

14:1

Ø 50OEM