for Ø 82.5 - 86 mm Piston & Cylinders

With the development of our racing cylinder head, we have gained a lot of knowledge.

We are therefore going to make a major upgrade to our JPS Aircooled Standard Cylinderhead.

JPS Aircooled 356 - 912 CNC Billet Cylinder

• manufactured on modern 5-Axis milling machines makes this head to a Class of his own
• 12 mm long spark plug threat
• valves guide support
• perfect Intake an exhaust canals
• 8mm steam valves
• 40mm intake / 35mm exhaust
• single  valve springs in top quality  

for Ø 91/93/94mm Piston & Cylinders ready to install

The JPS Aircooled high performance "Sport Plus " Cylinderhead for 91, 93 and 94mm P&C, is a new developed.

This CNC billet heads are flow bench tested with a lot of improvements and outperform any stock Cylinderhead by far.

If you looking for the next level of your 356 - 912 this heads are the solution for that.

• flow bench optimized intake and exhaust canal
• flow bench developed combustion chamber
• prepared for 42/35mm or 44/35mm valves for maximum torque and high performance.  

 Complete manufactured and black anodized.

Available option: Twin spark

In Development available soon.

More Informations on Request

JPS Aircooled billet manifold for Weber 48 IDA

• CNC manufactured out of a billet
• perfect shape
• flow bench tested
• black hard anodiced 

JPS Aircooled billet manifold for Weber 44 IDF and Solex 40P-II

• CNC manufactured out of a billet
• 100% matchported
• perfect shape
• O-Ring sealing
• flow bench tested
• black hard anodiced 

This Valve kit includes:

• 8 Valveseats
• 8 valveguides
• 8 valvesprings
• 8 Titanium retainer
• 16 valvekeepers

Valvesize:  40mm Intake,  35mm Exhaust,

all 8mm shaft and top quality

Ø 91mm with JE-Forged Pistons

(74x93mm)

• JE-Forged Pistons Ø 93mm
• Cast Cylinder Ø 93mm
• special Cylinderhead Studs
• 8 pcs special Cylinderhead Nuts in exchange

(74x94mm)

• JE-Forged Pistons Ø 94mm
• Cast Cylinder Ø 94mm
• special Cylinderhead Studs
• 8 pcs special Cylinderhead Nuts in exchange

(76.5x93mm)

• special Crankshaft 76.5mm stroke
• H-profile rod
• JE-Forged Pistons Ø 93mm
• Cast Cylinder Ø 93mm
• special Cylinderhead Studs
• 8 pcs special Cylinderhead Nuts in exchange

Available Option: Crankshaft in exchange

(76.5x94mm)

• special Crankshaft 76.5mm stroke
• H-profile rod
• JE-Forged Pistons Ø 94mm
• Cast Cylinder Ø 94mm
• special Cylinderhead Studs
• 8 pcs special Cylinderhead Nuts in exchange

Available Option: Crankshaft in exchange

Mandatory for Ø 93/94mm Piston & Cylinder

16 pcs

This Oilsump kit includes:

• 1 Oil sump with ring magnet complete assembled (all screws are tigthend to the correct torque and secured)
• 1 Oil tube extension
• 1 Drain plug
• 10 self-locking nuts M6
• 10 cooper ring for M6 nuts  
•  black anodized 

Available in 3.2 kg and 3.5 kg.

• CroMo flywheel CNC machined 
• available for 12V and 6V starter
• for 200mm Typ 1 kennedy clutch 
• stress and static calculated 
• race proven

Complet without spark wires

• made of highest quality aluminium precision tubes 
• correct heat treatment
• you can run all available camshafts
• pushrods can handle up to 200kg / 440lbs valve spring pressure
• racing proven over years up to 8k rpms
• ligther than stock pushrods

• made of highest quality aluminium precision tubes 
• correct heat treatment
• you can run all available camshafts
• pushrods can handle up to 200kg / 440lbs valve spring pressure
• racing proven over years up to 8k rpms
• ligther than stock pushrods
• available in every length on request

for 356 and 912

• CNC laser cutting
• precision copper exhaust gasket
• 1 set = 4 pcs

• available as kit or in parts too
• long rockershaft
• short rockershaft
• sleeve 
• clamp washer
• all parts are 100% CNC maschined an fits perfect
• shaft are carbon nitride and centreless grinded too factory specs

• hardened 54 HRC and grinded 
• CNC manufactured

• hardened 54 HRC and grinded
• CNC manufactured

CNC manufactured

CNC manufactured

CNC manufactured