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Stage6 Crankshaft HPC CPI
Stage6 Crankshaft HPC CPI
Stage6 Item no.: S6-8019500

Stage6 Crankshaft HPC CPI

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Suggested Retail Price: €175.00

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Name Stage6 Crankshaft HPC CPI
Item No. S6-8019500
Brand Stage6
Product Line Racing
RPM Range 0 - 16000 RPM
Stroke Original
Conrod Length Standard
Piston Pin 12 mm
Crankshaft end Fluted
Material Steel
Bearing Ø original

Stage6 HPC Crankshaft CPI, 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. 16mm shaft (variator side), compatible with big variators (by Stage6, Polini, Malossi, etc.).

 It is suitable for 50cc and 70cc sports, racing and even "Hyper Racing" engines. 

Also included are an oil pump gear and a special variator nut.


- As it comes with a bigger nut, this crankshaft cannot be used with inner rotor ignitions by Polini or MVT.
- Variator-side shaft is 16mm.

Suitable for (32)

Your product goes with the following manufacturers and their models:

Adly (Her Chee)
AirTech 50cc, Blizzard GTA 50cc, Cat 50cc, Jet 50cc, Noble 50cc, Panther 50cc, Silver Fox 50cc, Super Sonic 50cc, TB 50cc AC, Thunderbike 50cc

BT50QT-28B 2-stroke

Aragon 50cc, Aragon GP 50cc, Bravo 50cc, Formular R 50cc, Freaky 50cc, GTR 50cc LC - Minarelli horiz., Hussar 50cc AC (after 2003) - Min horiz. (pin 12mm), Oliver 50cc AC (after 2003) - Min horiz. (pin 12mm), Popcorn 50c AC (after 2003) - Min horiz. (pin 12mm)

Cracker 50cc, Ideo 50cc AC, Race 50cc 2-stroke, Roc 50cc, Spin GE 50cc, Stroke 50cc, XOR 50cc AC

Florett 50cc AC, Flory 50cc AC

F10 Wap 50cc AC (after 2004), F12 Phantom 50cc AC (after 2004), F12 Phantom 50cc LC (after 2004)

Spare Parts