1056 / 1504
x
X X
X
X
1056
ATV U-JOINTS
U-Joints are cold forged from SCM-415 steel, precision ground
journals are case hardened to HRC58-61 U. Joints are pre-
greased with hi-temp Lithium Complex 3 grease. Bearing
cups feature a Quad lip seal to keep contamination out and
grease in. Centrally located grease zerk and grease channels
in bearing cup evenly distributes grease. Kits include cap plug
to eliminate grease zerk for low clearance applications. Honda
Yoke assemblies have upgraded cross diameters from 17mm to
19mm. Honda yoke assemblies feature stainless steel clamps
and hi-quality neoprene rubber boots for long life and abrasion
resistance.
WPS# List
21-91001 $24.95
21-91002 20.95
21-91003 20.95
21-91004 21.95
WPS# List
21-91005 20.95
21-91006 25.95
21-91007 20.95
21-91008 20.95
WPS# List
21-91009 21.95
21-91010 21.95
21-91011 21.97
21-91012 21.97
21-91016 21.95
21-91017 27.50
Application
Year
U-Joint, Frt
Axle-Inner
(Ref 1)
U-Joint, Frt
Drive Shaft-Diff
Side (Ref 2)
U-Joint, Frt
Drive Shaft-Eng
Side (Ref 3)
U-Joint, Rear
Drive Shaft-Eng
Side (Ref 4)
U-Joint, Rear
Drive Shaft-Diff
Side (Ref 5)
U-Joint, Rear
Axle, Inner
(Ref 6)
U-Joint, Rear
Axle, Outer
(Ref 7)
ARCTIC CAT
250 4x4
‘01-05
21-91001
300 4x4
‘98-05
21-91001
375 4x4 w/AT
‘02
21-91003
400 4x4
‘98-00
21-91001
400 4x4 w/AT
‘03-04
21-91003
400 4x4 w/MT
‘01
21-91001
21-91001
400 4x4 w/MT
‘02
21-91001
400 4x4 w/MT
‘03-04
21-91003
400 FIS 4x4 TRV
‘09-14
21-91003
400 FIS 4x4 w/AT
‘03-08
21-91003
400 FIS 4x4 w/MT
‘02
21-91001
400 FIS 4x4 w/MT
‘03-08
21-91003
400 TBX 4x4
‘04-06
21-91003
400 VP 4x4 w/AT
‘05-06
21-91003
21-91003
400 VP 4x4 w/MT
‘05-06
21-91003
21-91003
450 H1
‘10-11
21-91003
450 TRV
‘12
21-91003
450i EFI
‘12
21-91003
450i TRV EFI
‘11-12
21-91003
450i TRV GT EFI
‘12
21-91003
FRONT
ENGINE
Front axle inner
Front drive shaft differential side
Front drive shaft engine side
Rear drive shaft engine side
Rear drive shaft differential side
Rear axle inner
Rear axle outer
Notes for Utility models:
• Six wheel vehicles middle
drive shaft use the same
U-joints as rear drive shaft
(locations 4 & 5)
• Middle axle use the same
U-joints as rear axle
(location 6 & 7)
• Utility vehicles with middle
U-joint on front drive shaft
use same U-joint as front
(location 2)
Continued on the next page
Note A: For inside clips order 21-91005 for outside clips order 21-91016
Note B: For inside clips order 21-91005 for outside clips order 21-91008
*Polaris UTVs used 21-91005 (inside clips) and 21-91008 (outside clips)
interchangeably on driveshafts please check your vehicle for proper fitment
DRIVE
TIRES
WHEELS
WHEEL /
TRACKKITS
TIREACC.
WINCH
PLOW
TOWING /
FARM
UTVCAB /
ACCESSORIES
AUDIO
WINDSHIELDS
ATVBODY
UTVBODY
STORAGE/
TRANSPORT
EXHAUST
BARS /GRIPS
LEVERS
CABLES
ATVCONTROLS
FUEL /AIR
SYSTEMS
AIRFILTERS
OILFILTERS
LIGHTING
ELECTRICAL
SPARKPLUGS
BATTERIES
CHARGERS
ENGINE
SUSPENSION
DRIVE
CHAIN
SPROCKETS
BRAKES
CHINESE
VEHICLEPARTS
CHEMICALS
TOOLS
LOCKS
TRAILERS
RAMPS /
STRAPS
PROMOTIONAL
REFERENCE
INDEX