FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2-1
FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2-2
FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2-1
FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2-2
FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2-1
FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2-2

FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2

$1,645.00
$1,645.00
Shipping calculated at checkout.
ETA NOVEMBER RESTOCK! Subject to change if any delays occur, do not order if in a rush. This is to guarantee you get a set on the next batch!

Engineered specifically for high-horsepower, turbo-charged street and track Honda K-Series builds, this 1st–2nd helical-cut replacement gearset offers ultimate drivetrain strength at an accessible price point.


By ditching weak stock synchronizers in favor of a rugged 5-dog engagement design and heavy-duty helical-cut gearing, this kit minimizes power loss, increases shock-load resistance, and enables ultra-fast clutchless shifting when racing.


Key Features & Benefits

  • Maximum Power Handling: Forged alloy gears feature enlarged gear teeth that undergo heat treatment, cryogenic treatment, and shot-peening for maximum fatigue resistance.
  • 5-Dog Engagement: Replaces stock synchronizers with five large, aggressive dog teeth for consistent, high-RPM engagement under severe abuse.

  • Serviceable & Modular Design: Built on splined gear assemblies featuring individually replaceable engagement rings. You can service wear components quickly and affordably without buying a complete gear.

  • No-Lift Shift (NLS) Capable: Supports clutchless no-lift shifts on the track when configured with an ignition-cut strain gauge system.

Technical Specifications

Parameter Specification
Engine/Transmission Fitment Honda K-Series (K20 / K24 Manual Transmissions)
Gears Included 1st Gear & 2nd Gear, plus Hub & Sleeve
1st Gear Ratio 2.8
2nd Gear Ratio 1.9
Tooth Profile Helical-Cut 
Engagement Type 5-Dog Engagement (Dog Box / Synchro Delete)
Metallurgy Forged Alloy, Heat-Treated, Cryo-Treated, Shot-Peened

⚠️ Critical Installation & Operational Notes

  • Clearance Required: Due to the significantly larger gear teeth, you MUST clearance the reverse actuator and reverse fork prior to final assembly.

  • Street vs. Track Operation:

    • Normal/Street Driving: Always require full clutch pedal use.

    • Track/Racing: Clutchless shifting is permissible ONLY with a properly tuned strain-gauge setup that cuts ignition to unload the drivetrain during shifts.

  • Tuning & Driver Responsibility: Improper strain-gauge settings, improper shift force, or driver error will cause premature wear or catastrophic damage to the dog teeth and engagement rings.
Product Details
FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2

FF TRANSMISSIONS HONDA K SERIES HELICAL CUT DOG GEARS 1-2

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