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Reed Valves and Petals

(90 products)
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Product type
Intake kit Intake spacer Reed petals Reed valve
Brand
Barikit Derbi Doppler Easyboost Italkit KRM Malossi Metrakit MotoForce MotoForce Racing MVT Polini Stage6 Standard Parts Voca Racing
Price
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KRM
Reed Valve Spacer 5mm KRM gold Derbi
Article no.: KR456F

Reed Valve Spacer 5mm KRM gold Derbi

17,00 €
In stock
19,00 €
-11% Discount
Sale
KRM
Reed Valve Spacer 5mm KRM blue Derbi
Article no.: KR348F

Reed Valve Spacer 5mm KRM blue Derbi

21,50 €
In stock
Polini
Reed Valve Polini AM6
Article no.: P213.0036

Reed Valve Polini AM6

43,00 €
In stock
RRP
60,00 €
-28% Discount
Sale
Standard Parts
Reed Valve OEM quality Suzuki RMX / SMX
Article no.: MF35.17000

Reed Valve OEM quality Suzuki RMX / SMX

15,00 €
In stock
19,50 €
-23% Discount
Sale
MVT
Intake Kit MVT S-Race 24mm PHBG Derbi Euro 2 / 3 / 4
Article no.: MVT-CL2

Intake Kit MVT S-Race 24mm PHBG Derbi Euro 2 / 3 / 4

43,00 €
In stock
RRP
64,00 €
-33% Discount
Sale
Stage6
Reed Valve Spacer 5° incline AM6 / Derbi Stage6 Black
Article no.: S6-3318811/BK

Reed Valve Spacer 5° incline AM6 / Derbi Stage6 Black

24,00 €
In stock soon
RRP
26,00 €
-8% Discount
Stage6
Reed Valve Stage6 R/T Viton AM6 / Derbi
Article no.: s6-3219088/VT

Reed Valve Stage6 R/T Viton AM6 / Derbi

65,00 €
In stock soon
RRP
72,00 €
-10% Discount
MotoForce Racing
Reed Valve MotoForce Racing AM6 / Derbi
Article no.: MF35.18901

Reed Valve MotoForce Racing AM6 / Derbi

18,00 €
In stock soon
Malossi
Reed Petals Malossi carbon 0,30 / 0,35 / 0,40mm Derbi Euro 2 / Euro 3
Article no.: M2712431.C0

Reed Petals Malossi carbon 0,30 / 0,35 / 0,40mm Derbi Euro 2 / Euro 3

26,00 €
In stock soon
RRP
29,00 €
-10% Discount
KRM
Reed Valve Spacer 10mm KRM gold Minarelli AM6
Article no.: KR457F

Reed Valve Spacer 10mm KRM gold Minarelli AM6

23,00 €
In stock soon
KRM
Reed Valve Spacer 10mm KRM blue Minarelli AM6
Article no.: KR349F

Reed Valve Spacer 10mm KRM blue Minarelli AM6

24,00 €
In stock soon
KRM
Reed Valve Spacer 10mm KRM red Minarelli AM6
Article no.: KR347F

Reed Valve Spacer 10mm KRM red Minarelli AM6

23,50 €
In stock soon
MVT
Intake Kit MVT S-Race 24mm PHBG Minarelli AM6
Article no.: MVT-CL1

Intake Kit MVT S-Race 24mm PHBG Minarelli AM6

54,00 €
In stock soon
RRP
64,00 €
-16% Discount
Stage6
Reed Valve Spacer 10mm AM6 / Derbi Stage6 Yellow
Article no.: S6-3318809/YE

Reed Valve Spacer 10mm AM6 / Derbi Stage6 Yellow

25,00 €
Currently not in stock
RRP
27,00 €
-7% Discount
Italkit
Reed Valve + Intake Manifold Italkit W-Force AM6
Article no.: IKLC44.400

Reed Valve + Intake Manifold Italkit W-Force AM6

99,00 €
Currently not in stock
Italkit
Reed Valve + Intake Manifold Italkit W-Force Derbi
Article no.: IKLC12.40

Reed Valve + Intake Manifold Italkit W-Force Derbi

92,50 €
Currently not in stock
Voca Racing
Reed Petals Voca Racing carbon 0.35mm Derbi Euro 2 / Euro 3
Article no.: VCR-RD132192/CA

Reed Petals Voca Racing carbon 0.35mm Derbi Euro 2 / Euro 3

19,50 €
Currently not in stock
RRP
23,00 €
-15% Discount
Voca Racing
Reed Petals Voca Racing carbon Biaxial 0.35mm Minarelli AM6
Article no.: VCR-RD132188/CA

Reed Petals Voca Racing carbon Biaxial 0.35mm Minarelli AM6

24,00 €
Currently not in stock
Doppler
Reed Petals for Doppler reed valve ER2 fiberglass Derbi
Article no.: CGN440168

Reed Petals for Doppler reed valve ER2 fiberglass Derbi

11,00 €
Currently not in stock
Easyboost
Reed Valve Spacer Easyboost 5mm AM6 / Derbi Euro 2 / 3 / 4
Article no.: EB015

Reed Valve Spacer Easyboost 5mm AM6 / Derbi Euro 2 / 3 / 4

16,50 €
Currently not in stock
MVT
Intake Kit MVT Racing 35mm PWK / VHST Derbi EBE / D50B0
Article no.: MVT-CL20

Intake Kit MVT Racing 35mm PWK / VHST Derbi EBE / D50B0

54,00 €
Currently not in stock
RRP
64,00 €
-16% Discount
Italkit
Reed Valve Italkit Carbon Honda NSR 125
Article no.: IKLC.26.4

Reed Valve Italkit Carbon Honda NSR 125

88,50 €
Currently not in stock
Voca Racing
Reed Valve Spacer 10mm Voca Yamaha DT 50 LC Portugal black
Article no.: VCR-RD13.SPC.130.BK

Reed Valve Spacer 10mm Voca Yamaha DT 50 LC Portugal black

21,00 €
Currently not in stock
RRP
22,00 €
-5% Discount
KRM
Reed Valve Spacer 10mm KRM AM6 Purple
Article no.: KR085F

Reed Valve Spacer 10mm KRM AM6 Purple

23,00 €
Currently not in stock
KRM
Reed Valve Spacer 5mm KRM Derbi Purple
Article no.: KR123F

Reed Valve Spacer 5mm KRM Derbi Purple

21,00 €
Currently not in stock
Polini
Reed Petals Polini carbon fiber 0,30mm Derbi Euro 2 / Euro 3
Article no.: P213.0527

Reed Petals Polini carbon fiber 0,30mm Derbi Euro 2 / Euro 3

16,50 €
Currently not in stock
RRP
19,00 €
-13% Discount
Polini
Reed Valve Polini Evolution carbon fiber Derbi
Article no.: P213.0051

Reed Valve Polini Evolution carbon fiber Derbi

60,50 €
Currently not in stock
RRP
66,00 €
-8% Discount
KRM
Reed Valve Spacer 5mm KRM red Derbi
Article no.: KR346F

Reed Valve Spacer 5mm KRM red Derbi

21,00 €
Currently not in stock
Standard Parts
Reed Valve Malossi VL5 Honda MTX 80 / Yamaha DT 80
Article no.: M273407C0

Reed Valve Malossi VL5 Honda MTX 80 / Yamaha DT 80

45,00 €
Currently not in stock
Polini
Reed Petals Polini Honda MTX 50
Article no.: P213.0520

Reed Petals Polini Honda MTX 50

5,90 €
Currently not in stock
RRP
6,60 €
-11% Discount
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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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