Altus Motorsports » 2005, 400 EXC 4-Stroke

Products for:

  • (X) Year: 2005
  • (X) Model: 400 EXC 4-Stroke

View Universal items for: 2005, 400 EXC 4-Stroke

Browse Products

Sort
View
 
Items 661-720 of 984
DIRT TRICKS - REAR SPROCKET CHROMOLY 47T-520 INFERNO KTM/HUS/GAS
DIRT TRICKS - REAR SPROCKET CHROMOLY 47T-520 INFERNO KTM/HUS/GAS
REAR SPROCKET CHROMOLY 47T-520 INFERNO KTM/HUS/GAS
Sprockets
(0) Reviews: Write first review
Item #: KTM-47-OR
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY 47T-520 KTM/HUS/GAS
DIRT TRICKS - REAR SPROCKET CHROMOLY 47T-520 KTM/HUS/GAS
REAR SPROCKET CHROMOLY 47T-520 KTM/HUS/GAS
Sprockets
(0) Reviews: Write first review
Item #: KTM-47-Z-C
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 48T-520 BLK KTM/HUSQ
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 48T-520 BLK KTM/HUSQ
REAR SPROCKET CHROMOLY STL/ZIR 48T-520 BLK KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-48-D-B
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 48T-520 CHROMATIC KTM/HUSQ
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 48T-520 CHROMATIC KTM/HUSQ
REAR SPROCKET CHROMOLY STL/ZIR 48T-520 CHROMATIC KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-48-Z-C
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 48T-520 INFERNO KTM
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 48T-520 INFERNO KTM
REAR SPROCKET CHROMOLY STL/ZIR 48T-520 INFERNO KTM
Sprockets
(0) Reviews: Write first review
Item #: KTM-48-OR
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 49T-520 BLK KTM/HUSQ
No Image Available
REAR SPROCKET CHROMOLY STL/ZIR 49T-520 BLK KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-49-D-B
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 49T-520 CHROMATIC KTM/HUSQ
No Image Available
REAR SPROCKET CHROMOLY STL/ZIR 49T-520 CHROMATIC KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-49-Z-C
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 49T-520 INFERNO KTM
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 49T-520 INFERNO KTM
REAR SPROCKET CHROMOLY STL/ZIR 49T-520 INFERNO KTM
Sprockets
(0) Reviews: Write first review
Item #: KTM-49-OR
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 50T-520 BLK KTM/HUSQ
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 50T-520 BLK KTM/HUSQ
REAR SPROCKET CHROMOLY STL/ZIR 50T-520 BLK KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-50-D-B
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 50T-520 CHROMATIC KTM/HUSQ
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 50T-520 CHROMATIC KTM/HUSQ
REAR SPROCKET CHROMOLY STL/ZIR 50T-520 CHROMATIC KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-50-Z-C
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 50T-520 INFERNO KTM
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 50T-520 INFERNO KTM
REAR SPROCKET CHROMOLY STL/ZIR 50T-520 INFERNO KTM
Sprockets
(0) Reviews: Write first review
Item #: KTM-50-OR
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 51T-520 BLK KTM/HUSQ
No Image Available
REAR SPROCKET CHROMOLY STL/ZIR 51T-520 BLK KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-51-D-B
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 51T-520 CHROMATIC KTM/HUSQ
No Image Available
REAR SPROCKET CHROMOLY STL/ZIR 51T-520 CHROMATIC KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-51-Z-C
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 51T-520 INFERNO KTM
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 51T-520 INFERNO KTM
REAR SPROCKET CHROMOLY STL/ZIR 51T-520 INFERNO KTM
Sprockets
(0) Reviews: Write first review
Item #: KTM-51-OR
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 52T-520 BLK KTM/HUSQ
No Image Available
REAR SPROCKET CHROMOLY STL/ZIR 52T-520 BLK KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-52-D-B
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 52T-520 CHROMATIC KTM/HUSQ
No Image Available
REAR SPROCKET CHROMOLY STL/ZIR 52T-520 CHROMATIC KTM/HUSQ
Chromoly Rear Sprocket
(0) Reviews: Write first review
Item #: KTM-52-Z-C
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 52T-520 INFERNO KTM
DIRT TRICKS - REAR SPROCKET CHROMOLY STL/ZIR 52T-520 INFERNO KTM
REAR SPROCKET CHROMOLY STL/ZIR 52T-520 INFERNO KTM
Sprockets
(0) Reviews: Write first review
Item #: KTM-52-OR
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 40T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 40T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354740
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 40T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 40T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 40T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.40SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 42T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 42T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354742
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 42T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 42T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 42T-520 HUS/HUSQ/KTM
Sprockets
(0) Reviews: Write first review
Item #: JTR897.42
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 42T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 42T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 42T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.42SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 43T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 43T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354743
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 45T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 45T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 45T-520 HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.45SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 45T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 45T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 45T-520 HUS/HUSQ/KTM
Sprockets
(0) Reviews: Write first review
Item #: JTR897.45
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 46T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 46T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354746
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 46T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 46T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 46T-520 HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.46
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 47T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 47T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354747
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 47T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 47T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 47T-520 HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.47
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354748
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
Sprockets
(0) Reviews: Write first review
Item #: JTR897.48
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 48T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 48T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 48T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.48SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 49T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 49T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354749
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 49T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 49T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 49T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.49SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 50T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 50T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354750
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 50T-520 HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 50T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 50T-520 HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.50
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 50T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 50T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 50T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.50SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 51T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 51T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354751
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 51T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 51T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 51T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.51SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 52T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 52T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354752
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
JT - REAR SPROCKET STEEL 52T-520 SC HUS/HUSQ/KTM
JT - REAR SPROCKET STEEL 52T-520 SC HUS/HUSQ/KTM
REAR SPROCKET STEEL 52T-520 SC HUS/HUSQ/KTM
Steel Rear Sprocket
(0) Reviews: Write first review
Item #: JTR897.52SC
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR SPROCKET STEEL 53T-520 HUS/HUSQ/KTM
REAR SPROCKET STEEL 53T-520 HUS/HUSQ/KTM
Rear Steel Sprocket
(0) Reviews: Write first review
Item #: 2-354753
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 40T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 40T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-40-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 42T-520 GLD HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 42T-520 GLD HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-42-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 45T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 45T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-45-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 47T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 47T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-47-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 48T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 48T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-48-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 48T-520 ORG HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 48T-520 ORG HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-48-ORG
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 49T-520 GLD HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 49T-520 GLD HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-49-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 49T-520 ORG HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 49T-520 ORG HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-49-ORG
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 50T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 50T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-50-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 50T-520 ORG HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 50T-520 ORG HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-50-ORG
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 51T-520 GLD HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 51T-520 GLD HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-51-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 51T-520 ORG HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 51T-520 ORG HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-51-ORG
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 52T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 52T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-52-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 52T-520 ORG HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 52T-520 ORG HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-52-ORG
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUPERSPROX - REAR STEALTH SPROCKET ALU/STL 53T-520 GLD HUS/HUSQ/KTM
REAR STEALTH SPROCKET ALU/STL 53T-520 GLD HUS/HUSQ/KTM
Stealth Rear Sprocket
(0) Reviews: Write first review
Item #: RST-990-53-GLD
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
PIVOT WORKS - REAR WHEEL BEARING KIT
PIVOT WORKS - REAR WHEEL BEARING KIT
REAR WHEEL BEARING KIT
Wheel Bearing Kit & Seal Kit
(0) Reviews: Write first review
Item #: PWRWK-T04-521
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
ALL BALLS - REAR WHEEL SPACER KIT
ALL BALLS - REAR WHEEL SPACER KIT
REAR WHEEL SPACER KIT
Wheel Spacer Kit
(0) Reviews: Write first review
Item #: 11-1084-1
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
SUNSTAR - REAR WORKS-Z SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
REAR WORKS-Z SPROCKET STEEL 48T-520 HUS/HUSQ/KTM
Works Z Rear Sprocket
(0) Reviews: Write first review
Item #: 8-354748E
Condition: New
Please Call for Availability
Call For Price: (580)477-1500
Items 661-720 of 984

View Universal items for: 2005, 400 EXC 4-Stroke