ENGINE
433
carriers
& racks
bumpers
& winches
accessories
plows &
implements
frame &
chassis
utv
accessories
body
handlebar
& grips
cables &
levers
fuel &
intake
engine
clutch
brakes
drive
steering &
suspension
bearings
tires &
wheels
chemicals
tools &
shop
exhaust
electrical
& ignition
HOT CAMS CAMSHAFTS continued
Camshafts
Shim Kit
Exhaust
Duration
Exhaust
Lift
Exhaust
Lobe
Center
Exhaust
Valve
Lash
Intake
Dura-
tion
Intake
Lift
Intake
Lobe
Center
Intake
Valve
Lash
YAMAHA CONTINUED
YFZ 450 04-09 Stage 1: Dual cam engine. Intake and
exhaust cams sold separately. Excellent
midrange and top-end increase. Cam
includes auto-decompression mechanism.
Uses stock valve springs.
870354 199.95
G
870967 89.95
G 265 8.67 103 0.2
0
0
0
0
YFZ 450 04-09 Stage 1: Dual cam engine. Intake and
exhaust cams sold separately. Excellent
midrange and top-end increase. Uses
stock valve springs.
870353 199.95
G
870967 89.95
G 0
0
0
0 269 8.86 110 0.15
YFZ 450 04-09 Stage 3 exhaust: Dual cam motor. Excel-
lent top-end increase. Uses stock valve
springs. Includes auto decompression
mechanism
870415 199.95
G
870967 89.95
G 253.5 8.74 97.25 0.2
0
0
0
0
YFZ 450 04-09 Stage 3: Dual cam engine. Intake and
exhaust cams sold seperately. Excel-
lent top-end increase. Uses stock valve
springs.
870414 199.95
G
870967 89.95
G 0
0
0
0 260 8.89 108 0.15
BIG BEAR
400
00-06 Stage 1: single-cam motor. Excellent mid-
range and top-end increase. Uses stock
valve springs and rockers.
870390 199.95
G
----
250
10 107.5 0.15 250 10 107.5 0.13
Grizzly
660
02-08 Mudbuster: Single cam engine. Improved
acceleration, more bottom-end, and no
top-end loss. Must use Raptor 660 center
intake valve spring, NOT included. All
other valve springs stock. Uses stock auto-
decompression mechanism.
870391 199.95
G
----
248 9.12 104.5 0.25 247 9.02 104.5 0.2
Grizzly
660
02-08 Single cam moto: True drop-in cam. No
valve spring change needed. Improved
acceleration, more bottom end, and no
top-end loss. Uses stock valve springs
and rockers. Uses stock auto decompres-
sion mechanism.
870392 199.95
G
----
248 9.04 102.5 0.25 246 8.64 101.5 0.2
Grizzly
700
07-13 Mudbuster: single cam motor. Improved
acceleration, more bottom-end, and no
top-end loss. Uses stock valve springs and
rockers. Uses stock auto-decompression
mechanism.
870393 199.95
G
----
243 8.6 102 0.18 253.5 9.6 111.75 0.1
Grizzly
700
07-13 Stage 1: single-cam motor. Excellent mid-
range power increase. Uses stock valve
springs and rockers.
870394 199.95
G
----
243 8.6 102.5 0.18 260 10.3 111 0.1
Grizzly
700
07-13 Stage 2: single-cam motor. More mid
range and great top-end power gains over
Stage 1. Uses stock valve springs and
rockers.
870395 199.95
G
----
255 8.6 102 0.18 268 10.3 112.5 0.1
KODIAK
400
93-99 Stage 1: single-cam motor. Excellent mid-
range and top-end increase. Uses stock
valve springs and rockers.
870390 199.95
G
----
250
10 107.5 0.15 250 10 107.5 0.13
Rhino 660 04-07 Mudbuster: Single cam engine. Improved
acceleration, more bottom-end, and no
top-end loss. Must use Raptor 660 center
intake valve spring, NOT included. All
other valve springs stock. Uses stock auto-
decompression mechanism.
870391 199.95
G
----
248 9.12 104.5 0.25 247 9.02 104.5 0.2
Rhino 660 04-07 Single cam moto: True drop-in cam. No
valve spring change needed. Improved
acceleration, more bottom end, and no
top-end loss. Uses stock valve springs
and rockers. Uses stock auto decompres-
sion mechanism.
870392 199.95
G
----
248 9.04 102.5 0.25 246 8.64 101.5 0.2
Rhino 700 08-13 Stage 2 cam. Single cam engine. Good
low-end torque gains across entire rpm
range. Uses stock auto decompression
mechanism. Uses stock valve springs and
rockers.
870396 199.95
G
----
243 8.6 102 0.18 253.5 9.6 111.75 0.1
Rhino 700 08-13 Stage 3 cam. Single cam engine. Good
midrange and top end gains. Performs
well with modified exhaust and airbox.
Uses stock auto decompression mecha-
nism.
870397 199.95
G
----
255 8.6 102 0.18 268 10.3 112.5 0.1
