FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-1
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-2
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-3
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-1
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-2
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-3
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-1
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-2
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET-3

FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET

$2,795.00
$2,795.00
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Upgrade your transmission with the ultimate high-performance, budget-friendly dog box conversion designed for street and race Honda K-Series engines. Built from heat-treated, cryo-treated, and shot-peened high-strength forged steel, this gearset replaces weak factory synchros with a robust 5-dog engagement system capable of holding up to 600 HP.

Featuring helical-cut teeth, this set offers the strength and rapid engagement of a dog box while minimizing the excessive whining noise typical of straight-cut gears, making it much more friendly for street driving.

Key Features

  • Helical-Cut Tooth Profile: Designed to increase gear mesh strength and reduce drivetrain power loss while remaining significantly quieter than straight-cut gearsets.

  • 5-Dog Engagement System: Massive dog teeth provide a wide target window for lightning-fast, positive gear engagement without synchro failure.

  • Serviceable Design: Built on splined gear assemblies featuring replaceable, serviceable engagement rings. | **Included Hardware** | 1–4 hub and slider set with fully serviceable dogs |

  • Strain Gauge / No-Lift Shift Compatible: Supports clutchless shifting under racing conditions when paired with a properly calibrated ECU strain gauge (ignition cut). Clutch use is still required for standard street driving.

  • Forged & Heat-Treated Construction: Heat-treated, cryo-treated, and shot-peened for maximum fatigue life and impact resistance under high load.

Gear Ratio Configuration Options

Choose the 3rd and 4th gear drop that matches your build:

Gear Standard Ratio All-Motor Short Ratio Turbo Long Ratio
1st Gear 2.80 — —
2nd Gear 1.90 — —
3rd Gear — 1.50 1.30
4th Gear — 1.15 1.00

Critical Installation Requirements & Modifications

IMPORTANT: Due to the oversized design of these heavy-duty forged gears, specific clearancing steps are required during assembly:

  1. Reverse Actuator & Fork: Must clearance the reverse actuator and reverse fork to provide adequate room for the larger gear diameter.

  2. Front Speed Sensor Clearance: For transmissions utilizing a front-casing speed sensor (not differential-driven), you must shim/clearance the speed sensor using washers. Failure to clearance will cause the larger gears to hit and destroy the sensor magnet.

Operational & Setup Notes

  • Clutch Usage: Normal street driving requires using the clutch. Clutchless shifting is strictly for high-rpm racing applications with an active ECU ignition-cut setup.

  • Strain Gauge Setup: Precise ECU engine/ignition cut timing is required for clutchless shifts. Improper strain gauge settings, poor shift technique, or user error will cause rounding and severe damage to the dog teeth, requiring service/replacement.

Rsx,k20,k24,civicsi,dog gears, 

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Product Details
FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET

FF TRANSMISSIONS HELICAL DOG GEARS K SERIES K24&K20 1-4 SET

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