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Cylinder

(108 products)
Motocross Cylinder kits Cylinder Heads and Pistons Camshafts and Valves Cylinder Gaskets Cylinder Accessories
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Product type
Camshaft & Timing Cylinder (alone) Cylinder gasket set Cylinder head gasket Cylinder kit Needle bearing Piston Piston ring Temperature sensor Valve cover gasket Valve stem gasket Valves & Accessories Exhaust valve Hose connection Intake valve Nut Valve shim
Brand
Airsal Athena Hot Cams Moose Racing MotoForce Naraku Prox Stage6 Standard Parts Top Performances Wössner
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Athena
Gasket Kit top end Suzuki RM 125
Article no.: AT-09343051

Gasket Kit top end Suzuki RM 125

17,00 €
In stock
Athena
Valve Cover Gasket KXF 450
Article no.: AT-09342865

Valve Cover Gasket KXF 450

13,00 €
In stock
RRP
18,50 €
-30% Discount
Athena
Valve Cover Gasket Kawasaki KXF 450
Article no.: AT-09342864

Valve Cover Gasket Kawasaki KXF 450

3,30 €
In stock
RRP
8,80 €
-63% Discount
Athena
Gasket Kit top end YZ 80 / 85
Article no.: AT-09342843

Gasket Kit top end YZ 80 / 85

13,00 €
In stock
Athena
Cylinder Gasket Set Suzuki RM-Z 450 2005-2006
Article no.: AT-09342836

Cylinder Gasket Set Suzuki RM-Z 450 2005-2006

30,00 €
In stock
RRP
48,00 €
-38% Discount
Athena
Gasket Kit top end RM-Z / KXF 250
Article no.: AT-09342822

Gasket Kit top end RM-Z / KXF 250

30,50 €
In stock
RRP
39,50 €
-23% Discount
Athena
Gasket Kit top end RM65 / KX65
Article no.: AT-09342816

Gasket Kit top end RM65 / KX65

6,40 €
In stock
RRP
17,50 €
-63% Discount
Athena
Gasket Kit top end CR 125 2003
Article no.: AT-09342801

Gasket Kit top end CR 125 2003

7,00 €
In stock
RRP
19,00 €
-63% Discount
Athena
Cylinder Gasket Kit for Athena Big Bore SXF 250
Article no.: AT-09342553

Cylinder Gasket Kit for Athena Big Bore SXF 250

27,00 €
In stock
RRP
52,50 €
-49% Discount
Athena
Cylinder Gasket Kit for Athena Big Bore CRF 450
Article no.: AT-09342546

Cylinder Gasket Kit for Athena Big Bore CRF 450

52,50 €
In stock
RRP
75,00 €
-30% Discount
Athena
Gasket Kit top end complete EXC 250 / 300
Article no.: AT-09342341

Gasket Kit top end complete EXC 250 / 300

30,00 €
In stock
Athena
Valve Cover Gasket Suzuki DR-Z 400
Article no.: AT-09342330

Valve Cover Gasket Suzuki DR-Z 400

9,00 €
In stock
RRP
24,00 €
-63% Discount
Athena
Cylinder Head Gasket Athena KTM EXC 400
Article no.: AT-09342301

Cylinder Head Gasket Athena KTM EXC 400

9,00 €
In stock
RRP
23,50 €
-62% Discount
Athena
Cylinder Head Gasket Athena EXC 520 / 525
Article no.: AT-09342299

Cylinder Head Gasket Athena EXC 520 / 525

14,50 €
In stock
RRP
25,00 €
-42% Discount
Athena
Gasket Kit top end GasGas EC 125
Article no.: AT-09341793

Gasket Kit top end GasGas EC 125

19,00 €
In stock
Athena
Cylinder Gasket Set KTM SX / EXC 125 2002-2011
Article no.: AT-09341785

Cylinder Gasket Set KTM SX / EXC 125 2002-2011

33,00 €
In stock
Sale
Athena
Piston Rings SX-F 350
Article no.: AT-09120429

Piston Rings SX-F 350

25,00 €
In stock
RRP
27,50 €
-9% Discount
Athena
Piston Rings Athena CRF 250
Article no.: AT-09120281

Piston Rings Athena CRF 250

5,00 €
In stock
RRP
13,50 €
-63% Discount
Athena
Piston Rings Athena KX / YZ 125
Article no.: AT-09120104

Piston Rings Athena KX / YZ 125

7,00 €
In stock
RRP
12,50 €
-44% Discount
Athena
Piston Big Bore RMZ250 / KXF 250 Size B
Article no.: AT-09100884

Piston Big Bore RMZ250 / KXF 250 Size B

175,00 €
In stock
Moose Racing
Valve Shims steel
Article no.: MR0926_MASTER

Valve Shims steel

from 2,70 €
In stock
Moose Racing
Cylinder Gasket Set Moose Racing CRF 450
Article no.: MRM810267

Cylinder Gasket Set Moose Racing CRF 450

34,00 €
In stock
RRP
68,50 €
-50% Discount
MotoForce
Cylinder Kit 50 Motoforce Yamaha PW 50
Article no.: MF19.19902

Cylinder Kit 50 Motoforce Yamaha PW 50

51,00 €
In stock soon
RRP
54,50 €
-6% Discount
Prox
Exhaust Valve Set Prox w/ springs SX-F 250 2008-2013
Article no.: PROX-09261436

Exhaust Valve Set Prox w/ springs SX-F 250 2008-2013

142,00 €
Currently not in stock
Prox
Intake Valve Prox titanium CRF 250 2004-2009
Article no.: PROX-09260809

Intake Valve Prox titanium CRF 250 2004-2009

92,00 €
Currently not in stock
Prox
Piston Prox PW80 47mm
Article no.: PROX-09106098

Piston Prox PW80 47mm

71,00 €
Currently not in stock
Prox
Piston Prox cast 53,95mm size B TM 125 2004-2018
Article no.: PROX-09103278

Piston Prox cast 53,95mm size B TM 125 2004-2018

133,00 €
Currently not in stock
Prox
Piston Prox cast 42,95mm size A KX 60
Article no.: PROX-09101399

Piston Prox cast 42,95mm size A KX 60

81,00 €
Currently not in stock
Prox
Piston Prox cast 53,96mm size B YZ 125 2005-2021
Article no.: PROX-09100595

Piston Prox cast 53,96mm size B YZ 125 2005-2021

120,00 €
Currently not in stock
Prox
Piston Prox cast 47,46mm size C YZ 85 before 2015
Article no.: PROX-09030828

Piston Prox cast 47,46mm size C YZ 85 before 2015

90,00 €
Currently not in stock
Athena
Gasket Kit top end Suzuki RM 85
Article no.: AT-09340210

Gasket Kit top end Suzuki RM 85

16,00 €
Currently not in stock
Athena
Cylinder Kit Athena YZ85 105cc
Article no.: AT-09310473

Cylinder Kit Athena YZ85 105cc

550,00 €
Currently not in stock
Athena
Cylinder Kit Athena Big Bore 144cc YZ 125 1998-2004
Article no.: AT-09310258

Cylinder Kit Athena Big Bore 144cc YZ 125 1998-2004

807,00 €
Currently not in stock
Athena
Cylinder Kit Athena YZ 125
Article no.: AT-09310095

Cylinder Kit Athena YZ 125

734,00 €
Currently not in stock
RRP
941,00 €
-22% Discount
Athena
Cylinder Kit Athena DR-Z 400
Article no.: AT-09310015

Cylinder Kit Athena DR-Z 400

467,00 €
Currently not in stock
RRP
594,00 €
-21% Discount
Athena
Cylinder Kit KX 125
Article no.: AT-09310012

Cylinder Kit KX 125

673,00 €
Currently not in stock
Naraku
Cylinder Kit Naraku 150cc 60mm Yamaha Xmax / YZF / WR 125
Article no.: NK600.73
1

Cylinder Kit Naraku 150cc 60mm Yamaha Xmax / YZF / WR 125

139,00 €
Currently not in stock
147,00 €
-5% Discount
Naraku
Cylinder Kit Naraku 125cc V.2 Yamaha X-Max, YZF, WR, Beta RR, Fantic, Rieju 125
Article no.: NK600.58.2

Cylinder Kit Naraku 125cc V.2 Yamaha X-Max, YZF, WR, Beta RR, Fantic, Rieju 125

124,00 €
Currently not in stock
Top Performances
Cylinder Kit d.52mm Top Performances 125cc Alu Yamaha Xmax
Article no.: T9932700

Cylinder Kit d.52mm Top Performances 125cc Alu Yamaha Xmax

189,00 €
Currently not in stock
Athena
Cylinder Gasket Set for 144 Athena YZ 125 LC 58mm
Article no.: AT-09343117

Cylinder Gasket Set for 144 Athena YZ 125 LC 58mm

53,00 €
Currently not in stock
Athena
Cylinder Gasket Set Honda CRF 450 2009-2016
Article no.: AT-09342573

Cylinder Gasket Set Honda CRF 450 2009-2016

68,50 €
Currently not in stock
Athena
Gasket Kit top end Husqvarna WR / CR 125
Article no.: AT-09341790

Gasket Kit top end Husqvarna WR / CR 125

35,00 €
Currently not in stock
Athena
Piston Kawasaki KX 85 Size B
Article no.: AT-09104655

Piston Kawasaki KX 85 Size B

79,00 €
Currently not in stock
Athena
Forged Piston YZ 85 52.95mm
Article no.: AT-09102780

Forged Piston YZ 85 52.95mm

123,00 €
Currently not in stock
Athena
Piston KX 85 Size B (48,46mm)
Article no.: AT-09101418

Piston KX 85 Size B (48,46mm)

70,50 €
Currently not in stock
Moose Racing
Cylinder Gasket Set Moose Racing KX 85
Article no.: MRM810414

Cylinder Gasket Set Moose Racing KX 85

21,50 €
Currently not in stock
Standard Parts
Piston Rings d.43x1,5mm Yamaha DT 50 MX
Article no.: SP-8384

Piston Rings d.43x1,5mm Yamaha DT 50 MX

3,40 €
Currently not in stock
Wössner
Piston Wössner Suzuki RM 250 2003 - 2008 Wössner size C
Article no.: WOE-8086DC

Piston Wössner Suzuki RM 250 2003 - 2008 Wössner size C

149,00 €
Currently not in stock
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12

Motocross Cylinders

In the motocross sector, you will find numerous two-stroke models as well as many four-stroke engines. In the former, the cylinder itself handles the fuel mixture control. Although upgrades and repairs to this engine type are mechanically relatively simple, it is not always easy to achieve optimal performance.

In models for adults, many four-stroke engines are found due to emission standards and performance requirements. In these cases, the cylinder head with the camshafts and other components handle the control and determine the power output. This mechanics is somewhat more complex for beginners.

In our online shop, you will find all parts and accessories for cylinders of the most popular models: KTM EXC and SX, Yamaha YZ, Honda CR and CRF, Kawasaki KX, Beta RR Enduro etc. We carry products for displacement classes ranging from 50cc to 500cc.

Cylinder kit

The cylinder of a motocross 2-stroke machine is often very powerful right from the factory, comparable to a racing cylinder in the 50cc range. Therefore, you will rarely find cylinder kits with increased displacement, but you will find some Athena kits with optimized transfer ports or improved exhaust valve systems.

For four-stroke engines, you will find Big Bore kits with a larger bore for increased displacement. Note: here, the carburetor or injection system must also be readjusted! This is not plug & play...

Pistons, cylinder heads, camshafts, and valves

When doing restorations or repairs, it is not always necessary to replace the entire cylinder. That is why we also offer individual original pistons as well as pistons for tuning kits and matching cylinder heads.

Here as well, you will find high-quality racing parts as well as standard parts in OEM quality or suitable replicas at affordable prices.

Note: If you want to tune a four-stroke engine, you will find the parts with the greatest influence on performance in these two subcategories, such as Stage 1 and Stage 2 camshafts from Hot Cams.

Gaskets

For every cylinder kit, we offer individual gaskets as well as complete gasket sets to carry out repairs cost-effectively. If you are looking for the right gaskets for a specific cylinder (for example, for a 144cc or 300cc Athena kit), you can visit the corresponding product page of the cylinder and find the matching replacement gaskets under spare parts.

Accessories

The mechanics of a motocross bike is full of surprises, so more specific components often need to be replaced. In the accessories subcategory for cylinder section, we offer many useful small parts: cylinder studs, temperature sensors, various fittings, screws, spacers, base gaskets, and more.

Brands and manufacturers

To offer you high-quality parts, we work with well-known brands.

For tuning or simple repairs, we trust well-known brands from the MX world: Athena, ProX, Moose Racing, as well as many others.

Navigation and helpful tips

While browsing the various categories of our online shop, you will find many details and tips at the bottom of the page. It is worth reading these so you can make your order with the help of some important information.

FAQ – Frequently asked questions about motocross cylinder kits

⇒ When should I replace the piston?

If the engine loses power but still runs cleanly, the piston is likely worn. The replacement interval depends on the engine type: the higher the RPM and the more intensive the use, the more often the piston should be replaced. We recommend a maximum of 10 to 15 hours for small two-strokes up to 125cc, and 25 to 30 hours for 250cc and above. In the Enduro sector, where the engine is used more moderately, these values naturally increase. For a four-stroke engine, we recommend 50 hours for 250cc models and slightly more for 450cc models, as these reach lower RPMs.

NOTE: Always follow the manufacturer's user manual. All maintenance intervals are precisely listed there.

⇒ When should the cylinder be replaced?

Common signs of wear include scoring in the cylinder wall, ovality exceeding 0.1 mm, damaged transfer ports, or a severe piston seizure.

⇒ Why did my engine seize (piston seizure) and how can this be avoided?

A piston seizure usually occurs when the piston overheats and gets stuck in the cylinder wall. This can be avoided through proper maintenance, a correctly adjusted carburetor, a clean air filter, and high-quality oil.

Prevention: correctly adjust the carburetor or injection system, use high-quality oil, perform regular maintenance, let the engine warm up for 2 to 3 minutes before riding, and regularly clean the air filter.

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