Estimated Arrival (ETA): End of March 2026
PO CLOSES 14th March 2026
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HRP Aluminum Front Axle 4mm Type
Gain the competitive edge with this precision-crafted HRP Aluminum Front Axle from HAYATO's acclaimed HRP Series. Designed specifically for competition use, this one-piece axle undergoes high-precision machining at a Japanese domestic factory to achieve exceptional rotational balance and rolling performance. Every detail serves the pursuit of victory on the track.
Key Features
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One-piece aluminum front axle designed for RWD competition vehicles.
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High-precision machining at Japanese factory ensures outstanding rotational balance.
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Compatible with vehicles equipped with RWD knuckles (sold separately).
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Engineered for exceptional rolling performance demanded in racing scenarios.
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Newly redesigned under supervision of Hayato Yoshiba.
Why Choose This
This axle delivers the rotational precision necessary for serious competition, where every fraction of rolling resistance affects lap times. The one-piece construction eliminates inconsistencies found in multi-part designs, while Japanese factory machining ensures each unit meets exacting tolerances. For racers pushing their RWD platforms to the limit, this component provides the foundation for predictable handling and maximum efficiency. The Hayato Yoshiba supervision guarantees alignment with professional racing requirements.
Product Information
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Product: SHIBATA R31S131 HRP Aluminum Front Axle 4mm Type
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Type: One-piece competition front axle
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Material: Aluminum
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Compatibility: RWD knuckle-equipped vehicles
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Note: Wheel spacers may be required depending on knuckle (V1, EVO/MOD stock) or wheel specifications
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Origin: Precision-machined in Japan
Upgrade your RWD chassis with this precision Japanese-made axle, engineered for the rotational efficiency that competition demands. The one-piece design eliminates variables and maximizes consistency. Secure this HRP component today and feel the difference precision machining makes on the track.
SHIBATA R31S131 HRP Aluminum Front Axle 4mm Type
Hyper Idler Shaft for GRK5-R & HRP High-Speed Idler Gear 24T/28T
Reinforce your GRK5-R or GRK-R motor unit with this trio of competition-proven drivetrain upgrades from SHIBATA. The Hyper Idler Shaft features special plating for enhanced wear resistance during high-RPM operation, while the HRP High-Speed Idler Gears benefit from revised resin materials and manufacturing methods under Hayato Yoshiba's supervision. Together, they deliver the reliability that has secured victories at SDC and other prestigious events.
Key Features
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R31S128 Hyper Idler Shaft: Special plating coating for improved wear resistance at high RPMs.
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R31S129 HRP High-Speed Idler Gear (24T): Revised resin material and manufacturing method.
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R31S130 HRP High-Speed Idler Gear (28T): 48-pitch gear optimized for bearing fit.
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Optimal bearing fit accounts for thermal expansion during extended operation.
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Competition-proven at SDC and other events, contributing to championship victories.
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Compatible with 1050 bearings (10mm outer diameter x 5mm inner diameter x 4mm thick).
Why Choose This
These components represent the culmination of racing development, where every detail from material selection to manufacturing precision affects performance and durability. The Hyper Idler Shaft's specialized plating addresses the specific challenge of high-RPM wear, while the HRP gears' revised resin formulation delivers consistent mesh under thermal stress. For racers demanding the same reliability that has powered SDC victories, this combination provides the foundation for sustained competitive performance. The Hayato Yoshiba supervision ensures alignment with proven racing setups.
Product Information
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Products:
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SHIBATA R31S128 Hyper Idler Shaft for GRK5-R
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SHIBATA R31S129 HRP High-Speed Idler Gear 24T
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SHIBATA R31S130 HRP High-Speed Idler Gear 28T
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Compatibility: GRK5-R/GRK-R motor units
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Gear Pitch: 48P
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Bearing Compatibility: 1050 bearings (10×5×4mm)
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Features: Special plating coating; revised resin materials; competition-proven design
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Supervision: Hayato Yoshiba
Upgrade your GRK motor unit with these competition-hardened drivetrain components, engineered for the demands of high-RPM racing. From plated shafts to thermally optimized gears, every detail serves victory. Secure this performance trio today and build the reliability that championships demand.
SHIBATA R31S128 Hyper Idler Shaft for GRK5-R
SHIBATA R31S129 HRP High-Speed Idler Gear 24T
SHIBATA R31S130 HRP High-Speed Idler Gear 28T
