ENGINE
392
body
accessories
handlebar
& grips
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levers
electrical
& ignition
engine
fuel &
intake
clutch
brakes
drive
steering &
suspension
bearings
tires
tools &
shop
exhaust
HOT CAMS DIRT BIKE
continued
MODEL
YEAR
DESCRIPTION
CAMSHAFTS
SHIM KIT
EXHAUST
DURATION
EXHAUST
LIFT
EXHAUST
LOBE
CENTER
EXHAUST
VALVE
LASH
INTAKE
DURATION
INTAKE
LIFT
INTAKE
LOBE
CENTER
INTAKE
VALVE
LASH
YAMAHA
TTR 125 99-13 Stage 1: single-cam motor. Excellent midrange
and top-end power increase. Uses stock valve
springs and rockers.
870335 169.95
G
----
223
5.9
103 0.13
227 6.8 99 0.1
WR 250F 01-13 Builder Series: Dual cam engine. Intake and
exhaust cams sold separately. High lift and
long duration for high RPM applications or
oversized engines requiring increased intake
capacity. Requires valve springs kit PART
#VSK4001.
870347 229.95
G
870966 89.95
G 0
0
0
0
265 9.27 111 0.15
WR 250F 01-13 Builder Series: Dual cam engine. Intake and
exhaust cams sold separately. Lower lift and
shorter duration for low RPM or high torque
applications. Requires valve springs kit PART
#VSK4001.
870344 229.95
G
870966 89.95
G 0
0
0
0
247 8.38 103 0.15
WR 250F 01-13 Builder Series: Dual cam engine. Intake and
exhaust cams sold separately. Lower lift and
shorter duration for low RPM or high torque
applications. Requires valve springs kit PART
#VSK4001. Uses stock auto decompression
mechanism.
870348 229.95
G
870966 89.95
G 248 8.05 98.5
0.2
0
0
0
0
WR 250F 01-13 Builder Series: Dual cam engine. Intake and
exhaust cams sold separately. Medium lift and
duration for mid RPM applications. Requires
valve springs kit PART #VSK4001.
870346 229.95
G
870966 89.95
G 0
0
0
0
255 8.89 106 0.15
WR 250F 01-13 Builder Series: Dual cam engine. Intake and
exhaust cams sold separately. Medium lift and
duration for mid RPM applications. Requires
valve springs kit PART #VSK4001.
870345 295.95
G
870966 89.95
G 0
0
0
0
251 8.38 104.5 0.15
WR 250F 01-13 Stage 1 Gold Series: Dual cam engine. Intake
and exhaust cams sold separately. Low to
mid RPM application. Requires valve spring
kit PART #VSK4001EX. Uses stock auto
decompression mechanism.
870341 229.95
G
870966 89.95
G 256 8.13 108
0.2
0
0
0
0
WR 250F 01-13 Stage 1 Gold Series: Dual cam engine. Intake
and exhaust cams sold separately. Low to mid
RPM application. Requires valve spring kit
PART #VSK4001IN.
870340 229.95
G
870966 89.95
G 0
0
0
0
251 8.5 106 0.15
WR 250F 01-13 Stage 1: Dual cam engine. Intake and exhaust
cams sold separately. Increases bottom and
midrange power for improved snap. Cam
includes auto-decompressor mechanism. Uses
stock valve springs.
870337 199.95
G
870966 89.95
G 252
8.1
104
0.2
0
0
0
0
WR 250F 01-13 Stage 1: Dual cam engine. Intake and exhaust
cams sold separately. Increases bottom and
midrange power for improved snap. Comes
with adjustable sprocket. Uses stock valve
springs.
870336 199.95
G
870966 89.95
G 0
0
0
0
249 8.48 106 0.15
WR 250F 01-13 Stage 2 Gold Series: Dual cam engine. Intake
and exhaust cams sold separately. Mid to
top RPM application. Requires valve spring
kit PART #VSK4001EX. Uses stock auto
decompression mechanism.
870343 229.95
G
870966 89.95
G 256 8.76 102.5 0.2
0
0
0
0
WR 250F 01-13 Stage 2 Gold Series: Dual cam engine. Intake
and exhaust cams sold separately. Mid to top
RPM application. Requires valve spring kit
PART #VSK4001IN.
870342 229.95
G
870966 89.95
G 0
0
0
0
261 8.79 110 0.15
WR 250F 01-13 Stage 2: Dual cam engine. Intake and exhaust
cams sold separately. Excellent top-end power
increase and good over rev. Cam includes
adjustable sprocket. Uses stock valve springs.
870338 199.95
G
870966 89.95
G 0
0
0
0
256 8.5 111.5 0.15
WR 250F 01-13 Stage 2: Dual cam engine. Intake and exhaust
cams sold separately. Excellent top-end power
increase and good over rev. Cam includes
auto-decompression mechanism. Uses stock
valve springs.
870339 199.95
G
870966 89.95
G 252
8.5 102.5 0.2
0
0
0
0
