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Camshafts and Valves

(25 products)
Cylinder Cylinder kits Cylinder Heads and Pistons Camshafts and Valves Cylinder Gaskets Cylinder Accessories
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Hot Cams Moose Racing Prox
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Prox
Valve Stem Seal Prox SX-F / FC 250
Article no.: PROX-35.VS028

Valve Stem Seal Prox SX-F / FC 250

4,40 €
In stock
Prox
Intake Valve Prox titanium YZF 250 2014-2018
Article no.: PROX-09263016

Intake Valve Prox titanium YZF 250 2014-2018

32,50 €
In stock
RRP
88,00 €
-63% Discount
Prox
Intake Valve Set Prox w/ springs YZF 450 2014-2017
Article no.: PROX-09262729

Intake Valve Set Prox w/ springs YZF 450 2014-2017

55,00 €
In stock
RRP
147,00 €
-63% Discount
Prox
Valve Shims x5 Prox 7,48x 2,625 CRF / YZF / KXF / RM-Z 250
Article no.: PROX-09261551

Valve Shims x5 Prox 7,48x 2,625 CRF / YZF / KXF / RM-Z 250

6,60 €
In stock
RRP
9,40 €
-30% Discount
Prox
Valve Shims x5 Prox 7,48x 1,675 CRF / YZF / KXF / RM-Z 250
Article no.: PROX-09261532

Valve Shims x5 Prox 7,48x 1,675 CRF / YZF / KXF / RM-Z 250

3,50 €
In stock
RRP
9,40 €
-63% Discount
Prox
Exhaust Valve Set Prox w/ springs KXF 250 before 2016
Article no.: PROX-09261457

Exhaust Valve Set Prox w/ springs KXF 250 before 2016

111,00 €
In stock
RRP
149,00 €
-26% Discount
Prox
Exhaust Valve Set Prox w/ springs YZF 450 2003-2009
Article no.: PROX-09261025

Exhaust Valve Set Prox w/ springs YZF 450 2003-2009

92,00 €
In stock
RRP
125,00 €
-26% Discount
Prox
Intake Valve Prox titanium SX-F / EXC-F 250 before 2013
Article no.: PROX-09260844

Intake Valve Prox titanium SX-F / EXC-F 250 before 2013

61,00 €
In stock
RRP
88,00 €
-31% Discount
Prox
Exhaust Valve Prox titanium SX-F / EXC-F 250 before 2013
Article no.: PROX-09260843

Exhaust Valve Prox titanium SX-F / EXC-F 250 before 2013

61,00 €
In stock
RRP
88,00 €
-31% Discount
Prox
Exhaust Valve Prox steel CRF 150 R
Article no.: PROX-09260668

Exhaust Valve Prox steel CRF 150 R

19,50 €
In stock
RRP
29,50 €
-34% Discount
Prox
Intake Valve Prox steel YZF 400 / WRF 426
Article no.: PROX-09260153

Intake Valve Prox steel YZF 400 / WRF 426

12,50 €
In stock
RRP
18,00 €
-31% Discount
Prox
Timing Chain Prox 92RH2015-108M
Article no.: PROX-09250631

Timing Chain Prox 92RH2015-108M

45,00 €
In stock
RRP
67,00 €
-33% Discount
Prox
Timing Chain Prox 82RH2010-128M
Article no.: PROX-09250388

Timing Chain Prox 82RH2010-128M

51,00 €
In stock
RRP
73,00 €
-30% Discount
Prox
Timing Chain Prox 98XRH2010-118M
Article no.: PROX-09250375

Timing Chain Prox 98XRH2010-118M

48,00 €
In stock
RRP
70,00 €
-31% Discount
Hot Cams
Valve Shims Hot Cams
Article no.: HC-5PK-MASTER

Valve Shims Hot Cams

from 8,00 €
In stock
Hot Cams
Camshaft exhaust Hot Cams Stage 1 KTM
Article no.: HC-3226-1E

Camshaft exhaust Hot Cams Stage 1 KTM

99,00 €
In stock
RRP
119,00 €
-17% Discount
Hot Cams
Camshaft exhaust Hot Cams Stage 1 YZF 450 2003-2006
Article no.: HC-4022-1E

Camshaft exhaust Hot Cams Stage 1 YZF 450 2003-2006

247,00 €
In stock
RRP
297,00 €
-17% Discount
Hot Cams
Camshaft Exhaust Stage 1 Hot Cams KXF 250 2011-2016
Article no.: HC-2219-1E

Camshaft Exhaust Stage 1 Hot Cams KXF 250 2011-2016

243,00 €
In stock
RRP
292,00 €
-17% Discount
Hot Cams
Camshaft exhaust Hot Cams KXF / RM-Z 250
Article no.: HC-2040-1E

Camshaft exhaust Hot Cams KXF / RM-Z 250

143,00 €
In stock
RRP
240,00 €
-40% Discount
Hot Cams
Camshaft intake Hot Cams Stage 1 KXF / RM-Z 250
Article no.: HC-2041-1IN

Camshaft intake Hot Cams Stage 1 KXF / RM-Z 250

217,00 €
In stock
RRP
261,00 €
-17% Discount
Hot Cams
Camshaft Hot Cams Stage 1 Honda CRF 450 2010-2016
Article no.: HC-1259-1

Camshaft Hot Cams Stage 1 Honda CRF 450 2010-2016

331,00 €
In stock
RRP
426,00 €
-22% Discount
Hot Cams
Camshaft intake Stage 1 Hot Cams Yamaha YZF 450
Article no.: HC-4278-1IN

Camshaft intake Stage 1 Hot Cams Yamaha YZF 450

213,00 €
In stock
RRP
263,00 €
-19% Discount
Moose Racing
Valve Shims steel
Article no.: MR0926_MASTER

Valve Shims steel

from 2,70 €
In stock
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

Camshafts and Valves - Motocross

The camshaft and valves are located in the cylinder head of 4-stroke engines. They are part of the valve timing system / valvetrain and are essential to its operation.

This category includes all spare parts related to the valve timing system: camshafts, valves, valve shims, springs, timing chains, valve stem seals, rocker arms, and much more.

Parts are available for the most popular models: KTM EXC, Yamaha YZF, Kawasaki KX, Suzuki RMZ and Honda CRF.

To offer high-quality components, we work with well-known brands such as ProX, Moose Racing, and Hotcams.

Tuning and Maintenance of Valves and Camshafts

4-Stroke Engine Tuning

Sport / racing camshafts are the best way to increase the performance of a 4-stroke engine. Modified valve timings allow for significantly higher engine speeds, more power, and higher torque.
You can also install larger valves, although this requires machining the cylinder head or using a special cylinder head.

CAUTION: When tuning a 4-stroke engine, carburetor tuning with jets or fuel injection tuning with an ECU must be adjusted, just as on a 2-stroke engine.

Valve Maintenance

Like many other components, valves are wear parts. As wear increases, valve clearance decreases, leading to power loss and starting problems, especially when the engine is warm. The valve shims can be replaced to correct the valve clearance. However, the valves will eventually need to be replaced.

CAUTION: Replacing these parts requires extensive mechanical knowledge.

Protecting Valves and Camshafts

The following rules generally help protect the valves:

  • Allow the engine to warm up properly
  • Do not run the engine into the rev limiter
  • Clean the air filter regularly
  • Follow the specified service intervals (oil change and replacement of the filter)
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