Ikusei Final M Size Top Review

Because the "Top" has an open vaginal canal and is made of porous TPE:

The "Ikusei Final" M-Size Top represents the climax of the nurturing journey. Designed for the dedicated supporter who has walked the long road from potential to perfection, this garment embodies the final stage of "Ikusei"—the moment where the character (and the fan) reaches their ultimate form.

Whether you are deep in the world of simulation games or supporting your favorite idol, this top serves as the uniform for the final boss battle.

Why upgrade to the Final version if you already own an older Ikusei M Size Top?

The "Final" model addresses the two biggest complaints of the V2: heat buildup under friction and weight instability. By adding internal channels for airflow and increasing the mass by 50%, Ikusei has effectively ended the upgrade path. There will likely be no "Final 2.0" because this is as good as it gets.

How does the Ikusei stack up against other "final" shifter assemblies?

| Brand | Model | Price (Approx.) | Bearing Type | Material | Longevity Rating | |-------|-------|----------------|--------------|----------|------------------| | Ikusei | Final M Size Top | $590 | Dual angular | 7075-T6 | 10/10 (Lifetime) | | Nismo | Solid Shift (M) | $320 | Single bushing | Cast steel | 7/10 (Bushing wear at 40k mi) | | RE-Amemiya | Spec-X | $480 | Three-piece roller | 6061 alum | 8/10 (Requires annual regrease) | | OEM Nissan | Factory Top | $80 | Rubber bushing | Cast alu | 4/10 (Slop at 30k mi) |

The Ikusei wins on raw durability and precision but loses on price and NVH (Noise, Vibration, Harshness). Because the "Top" has an open vaginal canal

Ikusei engineers start with a fundamental question: What does the OEM part fail to do? For the factory M-size selector top, the answer is usually longevity under heat and lateral load.

The Ikusei Final M Size Top addresses three core weaknesses:

Heat soak is the enemy of precise shifting. The Final M Top incorporates micro-fin channels along its base to dissipate transmission heat, keeping the selector mechanism within optimal operating temperatures even during 30-minute track sessions.

The M Size Top is forged from a proprietary blend of high-carbon steel and a corrosion-resistant alloy. Unlike standard tops that may warp under heat or pressure, the Ikusei Final variant maintains structural integrity even under extreme duress. A matte, nano-particle coating reduces wear and tear, ensuring that the surface remains scratch-free even after thousands of cycles. Why upgrade to the Final version if you

Installing the Ikusei Final M Size Top is an intermediate-level job. You will need:

Step-by-step overview:

Critical note: The Ikusei Final M Size Top requires a 500-mile "settling period." Do not adjust preload again until after this break-in. Initial shifts will feel stiff and mechanical—this is by design. After break-in, the action becomes rifle-bolt precise.