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- Best Picks by Swift Karting: The Essential Pit Tools
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196cc Clone Engine & Parts
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212cc Clone / Predator Engine & Parts
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Briggs LO206 Engines & Parts (LO206)
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Collection: Drive-line Components
811 Drive-line Components - Scroll Down
Complete Driveline Systems for 4-Cycle Karting
In low-horsepower racing like LO206 and Clone, driveline efficiency is free horsepower. A binding chain, a worn sprocket, or a dragging clutch can cost you tenths of a second per lap. We stock high-performance clutches, chains, gears, and hubs designed to transfer every bit of power from your crankshaft to the rear tires.
Racing Clutches
Hilliard, Stinger, & Noram. We carry the best centrifugal clutches for 4-cycle engines, plus tuning springs and weights to dial in your engagement.
Chains & Breakers
#35 & #219 Pitch. High-tensile racing chains (Gold/Space) that resist stretching. Don't forget a Chain Breaker tool!
Gears & Sprockets
Split Sprockets & Drivers. Quick-change aluminum split gears allow you to change ratios in seconds without removing the axle.
The Big Debate: #35 vs. #219 Pitch
Most LO206 and 4-cycle racers must choose a chain size. Your clutch driver must match your rear sprocket.
- #35 Chain: The standard for US club racing. It is robust, affordable, and resists derailing on bumpy tracks. (Tooth counts are smaller, e.g., 15T Driver / 58T Rear).
- #219 Chain: Common in 2-cycle and some LO206 classes. It is lighter, runs smoother, and offers finer gear ratio adjustments. (Tooth counts are higher, e.g., 19T Driver / 74T Rear).
Chain alignment must be perfect. If your rear sprocket isn't perfectly inline with the clutch driver, you will throw chains and overheat your clutch. Use a straight edge or laser alignment tool every time you move the engine.
Gear Ratio Tuning
Changing your rear sprocket size is the easiest way to tune for a specific track.
Larger Rear Sprocket: Better acceleration (Corner exit), lower top speed.
Smaller Rear Sprocket: Higher top speed (Long straights), slower acceleration.
We recommend carrying a range of split sprockets (e.g., 58-64 for #35 chain) to adapt to track conditions.
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Heavy-Duty Axle Key for 40mm and 30mm PKT Kart Axles
Regular price $10.80 USDRegular priceSale price $10.80 USD -
Robust Solid 38-Inch Black Anodized Aluminum Axle for Outlaw Karts
Regular price $108.50 USDRegular priceSale price $108.50 USD -
PKT 30mm Axle Key - 6x60mm Dual 6mm Peg - Sprint/Endurance Racing
Regular price $10.24 USDRegular priceSale price $10.24 USD -
3.0" Carbon Fiber Right Rear Sleeve for Standard Kart Hubs
Regular price $21.86 USDRegular priceSale price $21.86 USD -
1 1/4-Inch Axle Snap Ring for Kart Axle Stability
Regular price $0.63 USDRegular priceSale price $0.63 USD -
PKT 40mm Axle 3.2mm Thick for Robust Track Stability
Regular price $236.16 USDRegular priceSale price $236.16 USD -
Carbon Fiber Right Rear Long Sleeve for APC-Style Kart Hubs
Regular price $21.86 USDRegular priceSale price $21.86 USD -
PMI LC125B Aluminum Axle Lock Collar - 1 1/4 Inch Black - Universal Karting
Regular price $7.92 USDRegular priceSale price $7.92 USD -
Premium Black Anodized 40-Inch 1-1/4 Inch Aluminum Axle for Kart Enthusiasts
Regular price $84.15 USDRegular priceSale price $84.15 USD -
PKT 40mm Lightweight Sprocket Hub for LO206 Karts
Regular price $87.05 USDRegular priceSale price $87.05 USD -
CFSK-40 Twelve Piece Carbon Fiber Spacer Kit
Regular price $71.89 USDRegular priceSale price $71.89 USD -
34-Inch Thin Wall 1-1/4" Black Steel Axle .120 Wall
Regular price $88.73 USDRegular priceSale price $88.73 USDSold out -
PKT 40mm x 1040mm Axle - 2.5mm Wall - LO206 / Birel - TK - Other Italian chassis replacments
Regular price $229.00 USDRegular priceSale price $229.00 USD -
PKT 30mm x 1000mm Racing Axle - 3.0mm Wall - Heavy Duty Sprint / Outlaw
Regular price $217.82 USDRegular priceSale price $217.82 USD -
PKT 30mm 1000mm Axle - 2.5mm Wall - CIK/FIA Compliant
Regular price $217.82 USDRegular priceSale price $217.82 USD -
Heavy-Duty Steel Two-Piece 1.25 Inch Lock Collar for Kart Axles
Regular price $9.91 USDRegular priceSale price $9.91 USD -
PMI LC40-PMBK Aluminum Axle Lock Collar - 40mm Black Anodized - Universal Karting
Regular price $9.91 USDRegular priceSale price $9.91 USD -
Lightweight 40-Inch 1-1/4 Inch Aluminum Axle for Kart Racing Efficiency
Regular price $75.19 USDRegular priceSale price $75.19 USD -
Azusa Engineering 8164 42-Inch Thin Wall Steel Axle - 1-1/4" OD x .120" Wall - Open/Outlaw Class
Regular price $88.73 USDRegular priceSale price $88.73 USD -
Reliable 38-Inch 1-1/4 Inch .250 Wall Black Steel Axle for Kart Racing
Regular price $102.05 USDRegular priceSale price $102.05 USD -
Azusa 35-Inch Tubular Steel Axle - 1-1/4" OD x .250" Wall - Black Finish
Regular price $102.05 USDRegular priceSale price $102.05 USDSold out -
Steel Axle Key Stock Set for PMI Pocket Keyed Axles
Regular price $7.46 USDRegular priceSale price $7.46 USD -
Azusa Engineering 1-1/4" Tubular Black Steel Live Axle - 40" Length / .190 Wall - Universal / Developmental Series
Regular price $99.09 USDRegular priceSale price $99.09 USD -
35-Inch 1-1/4" Thin Wall Black Steel Axle .120 Thickness
Regular price $88.73 USDRegular priceSale price $88.73 USD -
Durable 38-Inch 1-1/4 Inch Thin Wall Steel Axle in Black Finish for Kart Racing
Regular price $88.73 USDRegular priceSale price $88.73 USD -
50mm Hard Axle AXT050H - OTK Chassis Direct Replacement
Regular price $211.88 USDRegular priceSale price $211.88 USD -
PKT 25mm 970mm Axle 3.0mm Wall for High-Performance Kart Applications
Regular price $176.05 USDRegular priceSale price $176.05 USD -
50mm Soft Axle AXT050U for OTK Chassis Flexibility
Regular price $232.29 USDRegular priceSale price $232.29 USD -
AXT050N 50mm Medium Axle for OTK Balanced Performance
Regular price $232.29 USDRegular priceSale price $232.29 USD -
Swift AK003 Two-Peg Axle Key - 50mm OTK Axles - All Classes
Regular price $7.56 USDRegular priceSale price $7.56 USD -
PMI Thin Wall Zinc Plated 32-Inch 1.25-Inch Axle for Lightweight Oval Karting
Regular price $150.89 USDRegular priceSale price $150.89 USDSold out -
PMI PM-48S 1.25 Inch Axle Stiffener - Aluminum Brace - All Classes
Regular price $23.40 USDRegular priceSale price $23.40 USD -
PMI 34-Inch Yellow Zinc 1.25" Pocket Keyed Axle - .190 Wall - Oval Racing
Regular price $106.49 USDRegular priceSale price $106.49 USD -
Versatile PMI 36-Inch 1.25-Inch Black Axle for High-Speed Oval Karting
Regular price $94.65 USDRegular priceSale price $94.65 USD -
PMI Key Set for 34.0-Inch Zinc Plated Axle - Four Steel Pieces
Regular price $5.40 USDRegular priceSale price $5.40 USD -
PKT 30mm Axle with 3.9mm Offset for Superior Track Handling
Regular price $217.82 USDRegular priceSale price $217.82 USD