Stage6 Crankshaft HPC piston pin=12mm

Stage6 Item no.: S6-8016802/12

Stage6 Crankshaft HPC piston pin=12mm

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Data Sheet
Suitable for (32)


Stage6 HPC Crankshaft MBK Booster / Stunt, HPC (High Primary Compression) crankshaft for 12mm piston pin.

HQ full-circle crankshaft for higher primary compression in the crankcase. It is entirely made of hardened steel, with reinforced connecting rod. Stage6 opted for a full-circle design instead of the standard design with inserts; this way the crankshaft has greater rotational inertia at high rpm. Excellent balancing (45%) reduces vibrations that stress materials and may lead to engine failure.

 It is suitable for 50cc and 70cc racing and even "Hyper Racing"engines. We have had excellent experiences when combining it with our MXS 70cc racing cylinders.


  • excellent balancing
  • full-circle
  • reinforced connecting rod
  • 12mm piston pin
Name Stage6 Crankshaft HPC piston pin=12mm
Item No. S6-8016802/12
Brand Stage6
Product Line Hyper racing
RPM Range 0 - 16000 RPM
Stroke Original
Conrod Length Standard
Piston Pin 12 mm
Crankshaft end Fluted
Bearing Ø original

Your product goes with the following manufacturers and their models:


Amico 50cc AC (1991 - 1992)

Amico 50cc ac (after 1993)

Amico GL 50cc AC

Amico Sport 50cc AC

SR 50cc AC (before 1994) - Minarelli vertical


Pista 2 50cc AC

Pista 50cc AC

Scoop 50cc


Booster 50cc AC (1992 - 1999)

Booster 50cc AC (after 2004)

Booster Next 50cc AC (after 1999)

Booster Next 50cc AC (before 1999)

Booster One 50cc until 2013

Booster Rocket 50cc AC

Booster Spirit 50cc AC (before 2004)

Booster Track 50cc AC

Stunt 50cc AC

Stunt 50cc AC CAT (after 2004)

Stunt Naked 50cc AC


BW's 50cc AC

BW's 50cc AC (after 2004)

BW's Bump 50cc AC

BW's Easy 50cc 2013

BW's NG 50cc AC (after 1999)

BW's NG 50cc AC (before 1999)

BW's Spy 50cc AC

Slider 50cc AC (before 2004)

Slider 50cc AC CAT (after 2004)

Spy 50cc

Target 50cc

Zuma 50cc AC

Zuma II 50cc AC

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