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Reed Valves and Petals

(87 products)
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Intake kit Intake spacer Reed petals Reed valve
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Barikit Doppler Easyboost Malossi MotoForce MotoForce Racing MVT MXS Racing Naraku Peugeot Piaggio Polini Stage6 Standard Parts Voca Racing Yamaha
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MXS Racing
Intake Kit Big Valve MXS Racing 35mm (PWK / VHST) + Stage6 reed valve Minarelli vertical
Article no.: MS-PKMMXS010/2

Intake Kit Big Valve MXS Racing 35mm (PWK / VHST) + Stage6 reed valve Minarelli vertical

94,50 €
Currently not in stock
RRP
133,00 €
-29% Discount
MXS Racing
Intake Kit Big Valve MXS Racing HighFlow 35mm PWK / VHST Minarelli vertical
Article no.: MS-PKMMXS010/1

Intake Kit Big Valve MXS Racing HighFlow 35mm PWK / VHST Minarelli vertical

159,60 €
Currently not in stock
168,00 €
-5% Set-Rabatt
Malossi
Carbon Fiber Sheets Malossi 0.30mm (100x100)
Article no.: M277366.C0

Carbon Fiber Sheets Malossi 0.30mm (100x100)

41,00 €
Currently not in stock
RRP
42,00 €
-2% Discount
Malossi
Reed Petals Malossi karbonit 0.3 / 0.35 Minarelli vertical
Article no.: M273547BK

Reed Petals Malossi karbonit 0.3 / 0.35 Minarelli vertical

4,90 €
Currently not in stock
RRP
5,50 €
-11% Discount
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Malossi
Reed Plates Malossi Karbonit 100x100mm 0.4 (x2)
Article no.: M277366.M0

Reed Plates Malossi Karbonit 100x100mm 0.4 (x2)

16,50 €
Currently not in stock
RRP
21,00 €
-21% Discount
Malossi
Reed Plates Malossi Karbonit 100x100mm 0.35 (x2)
Article no.: M277366.L0

Reed Plates Malossi Karbonit 100x100mm 0.35 (x2)

14,50 €
Currently not in stock
RRP
18,00 €
-19% Discount
Malossi
Reed Plates Malossi Karbonit 100x100mm 0.30 (x2)
Article no.: M277366.K0

Reed Plates Malossi Karbonit 100x100mm 0.30 (x2)

12,50 €
Currently not in stock
RRP
16,00 €
-22% Discount
Malossi
Reed Petals Malossi VL11 Carbon 0.3 / 0.35 / 0.4 Minarelli
Article no.: M277054.C0

Reed Petals Malossi VL11 Carbon 0.3 / 0.35 / 0.4 Minarelli

21,00 €
Currently not in stock
RRP
24,00 €
-13% Discount
Malossi
Reed Petals Malossi VL9 / VL12 Karbonit 0.3 / 0.35
Article no.: M278118.K0

Reed Petals Malossi VL9 / VL12 Karbonit 0.3 / 0.35

15,00 €
Currently not in stock
RRP
19,00 €
-21% Discount
Malossi
Reed Petals Malossi VL13 0.30mm 90° x2
Article no.: M279488.C0

Reed Petals Malossi VL13 0.30mm 90° x2

20,50 €
Currently not in stock
Malossi
Reed Petals Malossi VL13 0.30mm (45°) x2
Article no.: M2711798.C0

Reed Petals Malossi VL13 0.30mm (45°) x2

26,50 €
Currently not in stock
Malossi
Reed Valve Malossi VL13 Piaggio
Article no.: M279490.C0

Reed Valve Malossi VL13 Piaggio

61,00 €
Currently not in stock
RRP
63,00 €
-3% Discount
Malossi
Reed Valve Malossi VL12 Minarelli horizontal / Morini
Article no.: M277731.C0

Reed Valve Malossi VL12 Minarelli horizontal / Morini

54,00 €
Currently not in stock
RRP
61,00 €
-11% Discount
Malossi
Reed Valve Malossi VL11 Piaggio
Article no.: M277708.C0

Reed Valve Malossi VL11 Piaggio

52,00 €
Currently not in stock
RRP
59,00 €
-12% Discount
Malossi
Reed Petals Malossi 0.3 / 0.35 / 0.4mm VL11 / OEM Minarelli
Article no.: M277054.K0
1

Reed Petals Malossi 0.3 / 0.35 / 0.4mm VL11 / OEM Minarelli

19,50 €
Currently not in stock
Malossi
Reed Valve Malossi VL14 Minarelli horizontal / China 2T
Article no.: M2711817.C0

Reed Valve Malossi VL14 Minarelli horizontal / China 2T

62,00 €
Currently not in stock
RRP
67,00 €
-7% Discount
Naraku
Intake Spacer Naraku Jet Flow GY6 139QMB/QMA
Article no.: NK200.04

Intake Spacer Naraku Jet Flow GY6 139QMB/QMA

15,50 €
Currently not in stock
Voca Racing
Reed Petals Voca Racing carbon Biaxial 0.35mm Yamaha Aerox
Article no.: VCR-RD132166/CA

Reed Petals Voca Racing carbon Biaxial 0.35mm Yamaha Aerox

24,00 €
Currently not in stock
Doppler
Reed Petals Doppler S2R fiberglass Minarelli / China 2T
Article no.: CGN440166

Reed Petals Doppler S2R fiberglass Minarelli / China 2T

10,50 €
Currently not in stock
RRP
11,00 €
-5% Discount
Polini
Reed Valve Polini Minarelli horizontal / China 2T
Article no.: P213.0046
1

Reed Valve Polini Minarelli horizontal / China 2T

59,00 €
Currently not in stock
RRP
64,00 €
-8% Discount
Doppler
Reed Petals S3R Doppler carbon Yamaha Aerox
Article no.: CGN284732

Reed Petals S3R Doppler carbon Yamaha Aerox

23,00 €
Currently not in stock
Stage6
Reed Valve V-Force 3 Stage6 KX85
Article no.: S6-3219003

Reed Valve V-Force 3 Stage6 KX85

206,00 €
Currently not in stock
RRP
228,00 €
-10% Discount
Stage6
Reed Valve Stage6 VFORCE 3 Piaggio / Gilera / Vespa
Article no.: S6-3219002
1

Reed Valve Stage6 VFORCE 3 Piaggio / Gilera / Vespa

95,00 €
Currently not in stock
RRP
105,00 €
-10% Discount
Stage6
Reed Valve Stage6 VFORCE 3 Minarelli horizontal
Article no.: S6-3219000

Reed Valve Stage6 VFORCE 3 Minarelli horizontal

90,00 €
Currently not in stock
RRP
100,00 €
-10% Discount
MXS Racing
Intake Kit MXS Racing HighFlow AW 40mm PWK Minarelli horizontal
Article no.: MXS-012

Intake Kit MXS Racing HighFlow AW 40mm PWK Minarelli horizontal

295,00 €
Currently not in stock
Malossi
Reed Petals Carbon Malossi 0.30 / 0.35 / 0.40mm Peugeot vertical
Article no.: M272728.C0

Reed Petals Carbon Malossi 0.30 / 0.35 / 0.40mm Peugeot vertical

18,00 €
Currently not in stock
RRP
20,00 €
-10% Discount
Malossi
Reed Petals carbon 0.30mm (x2) for Malossi VL11 / Minarelli
Article no.: M278873.C0

Reed Petals carbon 0.30mm (x2) for Malossi VL11 / Minarelli

12,00 €
Currently not in stock
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12

Reed valve

The reed valve is a component found only on 2-stroke engines. It controls cylinder filling and extends the usable RPM range of the engine. Without a reed valve, engines would be weaker at low RPM and would deliver power much more abruptly.

Well-known brands such as Moto Tassinari, Stage6, Italkit, Polini, or Malossi offer high-quality reed valves for the most common models.

Performance improvement via reed valve

A reed valve can improve performance across the entire RPM range, as the cylinder is filled more efficiently and a higher flow rate is possible.

The material and thickness of the reed petals (steel, fiberglass, carbon, epoxy composite) also influence behavior at low or high RPM. As a general rule:

  • Thicker = stiffer = less torque, but possible gains at high RPM
  • Thinner = more flexible = better acceleration, but losses at high RPM

It is recommended to test different options and select the setup that best suits the vehicle.

Reed valve spacers are also available, allowing the crankcase volume to be increased.

Choosing the right reed valve

When setting up an engine, especially on 50cc scooters and gear bikes, the reed valve should match the cylinder kit. The more powerful the cylinder, the greater the flow capacity required from the reed valve.

Many manufacturers offer so-called “big valve” kits for tuned scooters such as Yamaha Aerox or Piaggio Zip, where the original reed valve is very small.

On geared motorbikes with Minarelli AM6 or Derbi engines, installing a larger reed valve often requires modification of the crankcase. Please take this into account.

In the motocross segment, Moto Tassinari offers V-Force reed valves, which are easy to install and provide improved flow. The thickness of the reed blades is already optimized for many common models (KTM SX, Yamaha YZ, Honda CR, etc.).

To simplify installation, complete intake kits are also available, including intake manifold, reed valve, and additional components.

Replacement reed petals for cost-effective repair

The reed valve can be replaced entirely, but this is often not necessary. The reed petals, or reed blades, move very quickly and are subject to high loads. They should be replaced regularly when they are no longer sealing properly.

A wide range of reed petals made of carbon, fiberglass, or metal is available.

There are also carbon reed sheets, allowing you to cut reed petals to a desired size, for example for less common models.

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