489 / 1410
EXHAUST
TIRES
TUBES
TIRE
ACCESSORIES
BIKE
ACCESSORIES
SNOWBIKE
PITBIKE
GRAPHICS /SEAT
BODY
CONTROLS
BARS /GRIPS
LEVERS
CABLES
INTAKE
FUELSYSTEMS
AIR FILTERS
OIL FILTERS
ELECTRICAL
SPARKPLUGS
BATTERIES
CHARGERS
ENGINE
PISTONS
SUSPENSION
DRIVE
CHAIN
SPROCKETS
BRAKES
CHEMICALS
GASCANS
TOOLS
LOCKS
RAMPS /STRAPS
TRAILERS
PROMOTIONAL
REFERENCE
INDEX
x
X X
X
X
489
# Valves with part number stamped on side
Pat. #4879976
RAD VALVE
Replacement One-piece clamp
59-7870 $12.95
Application Year
Valve
List
RL Reeds
List
RL Pro
List
Boots
List
Gasket
List
HONDA
CR125
‘88-91
59-7831 $44.95 59-7512
$64.95 59-7853
$19.95 59-7901
$5.95
‘92-97
59-7850
44.95 59-7512
64.95 59-7853
19.95 59-7901
5.95
‘98
59-8500
64.95 59-7853
19.95 59-7901
5.95
‘99
59-7853
19.95 59-7901
5.95
‘00
59-7854
19.95 59-7901
5.95
‘01
59-8562
$64.95 59-7854
19.95 59-7901
5.95
‘02
59-8576
69.95 59-7852
19.95 59-7901
5.95
‘03
59-7581
69.95 59-7852
19.95 59-7901A
5.95
‘04
59-7599
69.95 59-7851
19.95 59-7901A
5.95
‘05-07
59-7701J
$179.95
59-75001
69.95
CR250
‘84-85
59-7513
64.95 59-7853
$19.95 59-7902
$5.95
‘86-98
59-7832 $44.95
59-7862
19.95 59-7902
5.95
‘99
59-7832
44.95 59-8520
$64.95 59-7862
19.95 59-7902
5.95
‘00
59-8520
64.95 59-7862
19.95 59-7902
5.95
‘01
59-8533
64.95 59-7852
19.95 59-7902
5.95
‘02
59-8577
69.95
59-7902A
5.95
‘03
59-7583
69.95
59-7902A
5.95
‘04
59-75201
69.95 59-7852
$19.95 59-7902A
5.95
‘05-07
59-7702I
†
$179.95
59-75002
69.95
CR500
‘85-89
59-7848 $49.95 59-8550
66.95 59-7851
$19.95 59-7903
$5.95
‘90-01
59-7703A
$179.95
59-8550
66.95 59-7862
19.95 59-7903
5.95
HUSQVARNA
TC85
‘14-16
KAWASAKI
KX65
‘00-17
59-7715
$159.95
59-7596
$55.95
59-7915
$5.95
KX80/100
‘88-00
59-7836 $35.95 59-8566
56.95 59-7855
$7.95 59-7910
5.95
KX85/100
‘01-17
59-7710E
†
$169.95
59-85213
56.95 59-7855
7.95 59-7910
5.95
KX125
‘88-94
59-7841 $44.95 59-7514
64.95 59-7853
19.95 59-7911
5.95
‘95-97
59-7841
44.95 59-8596
64.95 59-7860
19.95 59-7911
5.95
‘98
59-8599
64.95 59-7851
19.95 59-7911
5.95
‘99-00
59-8515
64.95 59-7851
19.95 59-7911
5.95
‘01
59-8531
64.95 59-7854
19.95 59-7911
5.95
‘02
59-8578
69.95 59-7852
19.95 59-7911
5.95
‘03
59-7592
69.95 59-7851
19.95 59-7911A
5.95
‘04-06
59-7711K
†
$179.95
59-75205
69.95 59-7852
19.95 59-7931
5.95
KDX200/220
‘89-06
59-7850 $44.95 59-8554
64.95 59-7853
19.95 59-7911
5.95
KDX250
‘91-94
59-7832
44.95
59-7851
19.95 59-7912
5.95
KX250
‘87-98
59-7842
49.95 59-7515
$66.95 59-7851
19.95 59-7912
5.95
‘99
59-8516
64.95 59-7851
19.95 59-7912
5.95
‘00
59-8533
64.95 59-7851
19.95 59-7912
5.95
‘01
59-8588
64.95
‘02
59-8579
69.95 59-7856
$7.95 59-7912
$5.95
‘03
59-7594
69.95 59-7852
19.95 59-7912
5.95
‘04
59-75207
69.95 59-7851
19.95 59-7912
5.95
‘05-09
59-7712J
†
$179.95
59-75012
69.95
KX500
‘87-04
59-7833 $49.95 59-8550
66.95 59-7851
$19.95 59-7912
$5.95
Continued on the next page
† New RC2 design
• BOYESEN engineers embarked
on a mission to create a new
lineage of aerodynamic intake
technology by refining the primary
performance factors required to
increase peak horsepower through
design innovation: Aerodynamic
Surface Optimization, Model-Specific
Reed Petal Tensioning, Material Fuel
Resistance, and Multi-Stage Reed
Timing. Together, these innovations
create a new technological
benchmark in intake performance.
• Boyesen Engineering would like to
introduce the all-new RC2 Series Rad
Valve, designed to increase overall
horsepower and throttle response in
the Yamaha YZ250/250X KTM65SX
and Kawasaki KX85/100
• Each Boyesen RAD Valve is unique
- tailor made to that model, year and
displacement.
• The intake charge is redirected for
more even distribution to the intake
ports
• Constant flow velocity is maintained
for instant throttle response and more
horsepower
• One piece design and Easy
installation
RAD VALVE RC2
INTAKE