Honda CRF 450 X (05-07) SOHC 4v


** Prices And Specifications Effective November 2008, And Are Subject To Change Without Notice. **


Camshaft Profiles:

VALVE
LIFT

DURATION

DURATION
@ 0.050"

GRIND
NUMBER

DESCRIPTION

REGRIND

HARD
WELD

NEW
CAM

.356/.342

277°/298°

257°/258°

943/921

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Bolt in profile increases overall performance throughout RPM range.

N/A

N/A

57-122

$285.00

.400/.323

264°/280°

238°/244°

570/993

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Performance profile designed to increase overall performance. Excellent throttle response. Requires High Compression Piston, Exhaust System, and Performance Valve Spring Kit.


Accessories Required:

[+]

N/A

N/A

57-512

$285.00

.400/.350

282°/288°

256°/252°

961/962

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Performance profile designed to increase mid and upper end performance. Requires Performance Valve Spring Kit. Check ALL clearances!


Accessories Required:

[+]

N/A

N/A

57-442

$285.00

.400/.360

268°/280°

242°/245°

1043/1044

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Excellent torque profile to increase overall performance. Requires Performance Valve Spring Kit.

N/A

N/A

57-602

$285.00

.408/.342

282°/298°

258°/262°

208/921

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Race profile. Works well for TT, Super Motard or MX. Requires High Compression Piston, Shortened Valve Guides, Performance Valve Spring Kit, and Larger Diameter Followers.


Accessories Required:

[+]

N/A

N/A

57-042

$285.00

.415/.342

276°/288°

252°/252°

493/729

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Performance profile designed to increase mid and upper end performance. Requires Performance Valve Spring Kit, Larger Diameter Followers, and High Compression Piston.


Accessories Required:

[+]

N/A

N/A

55-462

$285.00

.415/.342

284°/298°

261°/258°

242/921

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A WEB CAM Winner! Requires Performance Valve Spring Kit, Larger Diameter Followers, and High Compression Piston.

N/A

N/A

57-192

$285.00

.415/.410

276°/276°

252°/248°

493/739

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Torque profile to increase overall performance. Excellent throttle response. Requires High Compression Piston, Shortened Valve Guides, Performance Valve Spring Kit, and Larger Diameter Followers.


Accessories Required:

[+]

N/A

N/A

55-442

$285.00

.432/.350

293°/296°

260°/260°

415/416

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The "MYSTO" cam designed for race use ONLY. Works good for big bore applications. Requires High Compression Piston, Performance Valve Spring Kit, Shortened Valve Guides, and Larger Diameter Followers. Check ALL clearances!


Accessories Required:

[+]

N/A

N/A

57-072

$285.00

Other Products:

[ Clear ]

Buckets, Shim Under Intake Oversized

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Oversized to 28 mm shim under intake tappet. Fits all models TRX / CRF 450 engines. Price Per Set (2).

CF-H01

$115.00

Valve Spring Kit With Titanium Retainers (High Rev)

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Kit includes performance single springs and Titanium retainers. Recommend for Flat Track use and Hi-Rev applications. OK up to 12,000 RPM. You do not have to use shortened guides with this kit unless you go over 0.410" intake valve lift and 0.350" exhaust valve lift.

VC-H97

$250.00

Valve Spring Kit With Titanium Retainers

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Kit includes performance dual springs and Titanium retainers. Recommend to use with stainless valves.


Accessories Required:

[+]

VC-H11

$195.00

Valves, Stainless Intake Standard Size

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One piece EV8 stainless steel and swirl polished with black nitroneg stem. Standard size 36 mm. Fits TRX 450 (04-08), CRF 450 R (02-08), and CRF 450 X (05-07) oversized +1 mm Price (Each).

IV-H15

$34.00

Valves, Stainless Exhaust Standard Size

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One piece EV8 stainless steel and swirl polished with black nitroneg stem. Fits Standard CRF 450 R (07-08), Standard CRF 450 X (05-07), Standard TRX 450 R / ER (06-08). Price (Each).

EV-H07

$35.00

Valves, Stainless Exhaust Oversized

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One piece EV8 stainless steel and swirl polished with hard chrome stem. Oversized to 32 mm. Fits CRF 450 R (02-06) +1 mm, TRX 450 R (04-05) +1 mm, TRX 450 (06-08) +2 mm. Price (Each).

EV-H16

$34.00

Valves, Stainless Exhaust

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One piece EV8 stainless steel and swirl polished with black nitroneg stem. Fits all CRF 450 (02-06) Standard size 31 mm, TRX 450 (04-05) Standard size, TRX 450 R (06-08)+1 mm OS. Price (Each).

EV-H15

$34.00

Installation Information:

General Installation Information

Degreeing In Your Camshaft

General Valve Spring Information

Valve Spring Installed Height Information



Last update: November 20 2008