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Big-Valve Kit Polini

Polini Item no.: P215.0410

Big-Valve Kit Polini

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Data Sheet
Suitable for (32)


Upgrade kit to change the original one-petal reed set-up to a more efficient two-petal one. Highly recommended in conjunction with a big bore carb. The considerably larger intake area allows a larger volume of mixture to enter the crankcase. This results in a better gas flow into the cylinder which in turn results in a higher power output throughout the rev range. Kit consists of a reed cage, two petals, inlet manifold and small parts. Suits all Dellorto and Amal carbs from 12 to 21mm choke size.

Data Sheet

Name Big-Valve Kit Polini
Item No. P215.0410
Brand Polini
Carburator Diameter 21mm
Petals Material Carbon
Petal Thickness 0.35 mm

Your product goes with the following manufacturers and their models:

Adly (Her Chee)

Rapido 50cc


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)

Slider 50cc AC (before 2004)

Slider 50cc AC CAT (after 2004)

Spy 50cc AC

Target 50cc

Zuma 50cc AC

Zuma II 50cc AC

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