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NGK
849 products
NGK Spark Plugs
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PROX STEEL INTAKE VALVE/SPRINGKIT RM-Z450 '05-06 28.SIS3405-2
Regular price
$119.58
Sale price
$119.58
Regular price
Unit price
/per
MFG Part Number: 28.SIS3405-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT KX450F '06-08 + KFX450R 28.SIS4406-2
Regular price
$132.88
Sale price
$132.88
Regular price
Unit price
/per
MFG Part Number: 28.SIS4406-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT YZ/WR250F '01-10 28.SIS2401-2
Regular price
$156.11
Sale price
$156.11
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/per
MFG Part Number: 28.SIS2401-2 Wiseco's valve train components are the next great products available to maximize the performance of your highly stressed racing engine! Each new product is made from ...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF450R '09-11 28.SIS1409-2
Regular price
$119.58
Sale price
$119.58
Regular price
Unit price
/per
MFG Part Number: 28.SIS1409-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT RM-Z250 '07-10 28.SIS3337-2
Regular price
$112.38
Sale price
$112.38
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/per
MFG Part Number: 28.SIS3337-2 Wiseco's valve train components are the next great products available to maximize the performance of your highly stressed racing engine! Each new product is made from ...
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PROX STEEL INTAKE VALVE/SPRINGKIT YZ450F '10-11 28.SIS2440-2
Regular price
$119.58
Sale price
$119.58
Regular price
Unit price
/per
MFG Part Number: 28.SIS2440-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF450R '02-08 28.SIS1403-2
Regular price
$122.73
Sale price
$122.73
Regular price
Unit price
/per
MFG Part Number: 28.SIS1403-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT KX450F '09-11 28.SIS4409-2
Regular price
$132.88
Sale price
$132.88
Regular price
Unit price
/per
MFG Part Number: 28.SIS4409-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT KTM250SX-F/EXC-F '05-07 28.SIS6326-2
Regular price
$120.36
Sale price
$120.36
Regular price
Unit price
/per
MFG Part Number: 28.SIS6326-2 The ProX steel valves are manufactured of premium grade steel to exact OEM specifications and tolerances. the steel valves are made by the leading OEM factories in Jap...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF450X '05-09 28.SIS1405-2
Regular price
$119.58
Sale price
$119.58
Regular price
Unit price
/per
MFG Part Number: 28.SIS1405-2 Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the e...
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PROX STEEL INTAKE VALVE/SPRINGKIT RM-Z450 '05-06 111075
Regular price
$886.73
Sale price
$886.73
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT RM-Z450 '05-06 111075
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger va...
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PROX STEEL INTAKE VALVE/SPRINGKIT KX250F '07-08 111080
Regular price
$120.90
Sale price
$120.90
Regular price
Unit price
/per
Wiseco's valve train components are the next great products available to maximize the performance of your highly stressed racing engine! Each new product is made from premium materials for maximum ...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF250R '04-09 111066
Regular price
$116.95
Sale price
$116.95
Regular price
Unit price
/per
Wiseco's valve train components are the next great products available to maximize the performance of your highly stressed racing engine! Each new product is made from premium materials for maximum ...
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PROX STEEL INTAKE VALVE/SPRINGKIT YZ/WR250F '01-10 111071
Regular price
$167.95
Sale price
$167.95
Regular price
Unit price
/per
Wiseco's valve train components are the next great products available to maximize the performance of your highly stressed racing engine! Each new product is made from premium materials for maximum ...
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PROX STEEL INTAKE VALVE/SPRINGKIT LT-R450 '06-11 111076
Regular price
$886.73
Sale price
$886.73
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT LT-R450 '06-11 111076
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger v...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF450R '09-11 111070
Regular price
$886.73
Sale price
$886.73
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT CRF450R '09-11 111070
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger va...
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PROX STEEL INTAKE VALVE/SPRINGKIT KX450F '09-11 111083
Regular price
$985.32
Sale price
$985.32
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT KX450F '09-11 111083
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger val...
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PROX STEEL INTAKE VALVE/SPRINGKIT KX250F '09-10 111081
Regular price
$120.90
Sale price
$120.90
Regular price
Unit price
/per
Wiseco's valve train components are the next great products available to maximize the performance of your highly stressed racing engine! Each new product is made from premium materials for maximum ...
Sold Out
PROX STEEL INTAKE VALVE/SPRINGKIT KX450F '06-08 + KFX450R 111082
Regular price
$985.32
Sale price
$985.32
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT KX450F '06-08 + KFX450R 111082
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsSt...
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PROX STEEL INTAKE VALVE/SPRINGKIT KTM250SX-F/EXC-F '05-07 111084
Regular price
$129.49
Sale price
$129.49
Regular price
Unit price
/per
The ProX steel valves are manufactured of premium grade steel to exact OEM specifications and tolerances. the steel valves are made by the leading OEM factories in Japan and are a direct and cost-e...
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PROX STEEL INTAKE VALVE/SPRINGKIT YZ450F '10-11 111073
Regular price
$886.73
Sale price
$886.73
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT YZ450F '10-11 111073
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger val...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF450R '02-08 111068
Regular price
$157.34
Sale price
$157.34
Regular price
Unit price
/per
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger valve springs deal with the extra weight of the steel valve...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF450X '05-09 111069
Regular price
$886.73
Sale price
$886.73
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT CRF450X '05-09 111069
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger va...
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PROX STEEL INTAKE VALVE/SPRINGKIT CRF250R '10-11 111067
Regular price
$911.97
Sale price
$911.97
Regular price
Unit price
/per
PROX STEEL INTAKE VALVE/SPRINGKIT CRF250R '10-11 111067
Replaces the OEM valves & valve springsSteel, nitrided valves for increased durability and less wear under extreme conditionsStronger va...
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