Kart 2-Stroke 125cc Direct

TYRES

• Compound: Slick
• Front Pressure: 0.85 bar
• Rear Pressure: 0.80 bar
• Tyre Blanket Temp: N/A

ELECTRONICS

• TC: N/A (not available on this kart)
• ABS: N/A (not available on this kart)
• Brake Magic / Engine Braking: N/A (fixed; direct drive, no clutch)
• Brake Bias: F: 62% / R: 38%
• Brake Pressure: 100%

DRIVETRAIN

• Fuel Map: N/A (fixed carburetor; no selectable maps)
• Gear Ratios: Single speed direct drive, 1st: 1.00 / Final Drive: 3.60 (11T clutch / 39T axle sprocket)

SUSPENSION

• // FRONT
• Ride Height: 18 mm
• Wheel Rate FL / FR: 38,000 N/m / 38,000 N/m
• ARB: N/A (rigid chassis, no ARB)
• Brake Torque Multiplier: 100%
• Brake Bias: F: 62% / R: 38%
• // REAR
• Ride Height: 20 mm
• Wheel Rate RL / RR: 52,000 N/m / 52,000 N/m
• ARB: N/A (rigid axle)
• Diff Preload: N/A (solid axle, no differential)
• Diff Coast: N/A
• Diff Power: N/A

DAMPERS

• (Kart has no dampers; chassis flex is the only compliance)

AERO

• Front Wing: N/A
• Rear Wing: N/A
• Downforce Level: None (no aero devices)
• Brake Ducts: N/A

KEY SETUP NOTE

• Without a differential, the kart turns by lifting the inside rear wheel. Because of that, a stiffer front end (higher front rate) and slightly lower tyre pressures at the 32 °C air and 43 °C track temperatures give a bit more bite and rotation on turn-in. Keep the rear a touch softer than the front pressure so the inside rear lifts cleanly on throttle at exit without the kart pushing wide. Pressures are kept low because slicks build heat fast in these temperatures, and for a single flying lap you want maximum mechanical grip from the first corner.

TRACK GUIDE

• Brake as late as you dare at the end of the main straight. Direct drive with no engine braking means all your stopping power comes from the pedal, so hit 100% pressure instantly and trail it off as you turn in.
• Keep corner entry smooth but aggressive: a quick, decisive steering input to lift the inside rear, then hold the line. Over-rotation scrubs speed in a kart, so rotate with the brakes and then get the wheel straight early.
• Hit the apex kerbs only where they are flat and keep the kart settled. Riding high kerbs unloads the rear and can cost traction on exit.
• Prioritize exit speed everywhere. With a 125cc 2-stroke, the powerband is narrow, so be on the throttle early and keep the revs in the sweet spot down the straights.
• Lap time is won in the slow corners that lead onto the long straights. A tenth gained on exit carries all the way to the next braking zone.