Available  Parts

jps Aircooled                                  356 - 912 Billet Cylinderhead

"Standard"

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  

 



JPS Aircooled                                  356 - 912 Billet Cylinderhead

"SPORT PLUS"

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



JPS AIRCOOLED                                  356 - 912 BILLET CYLINDERHEAD

"Race  Head"

In Development available soon.

 

More Informations on Request

 

 

 



JPS Aircooled                        Billet  Intake  MANIFOLDs

For Weber 48 IDA

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 INTAKE MANIFOLDS

FOR WEBER 44 IDF    for SOLEX  40P-II

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 

 



JPS Aircooled                           Valve Kit

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

 

 

 

 

 



JPS Aircooled                      Pistens & Cylinder

1925 cc

Ø 91mm with JE-Forged Pistons



JPS AIRCOOLED                      PISTENS & CYLINDER

2011  cc

(74x93mm)

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

 

 

 



JPS AIRCOOLED                      PISTENS & CYLINDER

2054  cc

(74x94mm)

 

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

 

 

 

 



JPS AIRCOOLED                      PISTENS & CYLINDER

2079  cc

(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

 

 

 



JPS AIRCOOLED                      PISTENS & CYLINDER

2124  cc

(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

 

 

 



JPS Aircooled    Cylinderhead Studs

Mandatory for Ø 93/94mm Piston & Cylinder

16 pcs

 

 



JPS Aircooled                      Oilsump Extension          Catch Oilsump                              356 -912

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 

 



Jps Aircooled                                  356 - 912 Flywheel                      CNC Machined

3.2 kg or 3.5 kg

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


Twinn Spark Distrubitor based on  1-2-3 Ignition Tune or Bluetouth

Complet without spark wires

 



JPS Aircooled                                  356 - 912 HD Aluminum-Pushrods

Stock lenght

  • 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

 

 



JPS Aircooled                                  356 - 912 HD Aluminum-Pushrods

Custom Lenght

  • 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

 



Lifter

for 356 and 912

 

 

 

 



JPS Aircooled                      Cooper  Exhaust  Gasket

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

 

 

 

 

 

 



JPS Aircooled                                  356 - 912 VALVETRAIN PARTS

  • 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


JPS Aircooled                                  356 - 912 Rocker shaft  - long

  • hardened 54 HRC and grinded 
  • CNC manufactured


jps aircooled                                  356 - 912 Rocker shaft - short

  • hardened 54 HRC and grinded
  • CNC manufactured


jps aircooled                                  356 - 912  spacer                              for  Rocker shaft

CNC manufactured



jps aircooled                                  356 - 912 Radius washer

CNC manufactured



jps aircooled                                    36mm  Venturi

for Solex 40-PII

CNC manufactured