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UMA Racing Bore-up Connecting Rod 99MM for Yamaha Aerox / MT/ R15 - 02B00880

UMA Racing Bore-up Connecting Rod 99MM for Yamaha Aerox / MT/ R15 - 02B00880

Rs. 6,979.00
Rs. 6,979.00
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The UMA Racing Bore-up Connecting Rod 99mm (02B00880) is a high-strength engine component designed for riders performing displacement upgrades (bore-up kits) on Yamaha’s 155cc liquid-cooled platform.

When increasing an engine's bore or stroke, the stock connecting rod often becomes the weakest link under increased combustion pressure. This forged and strengthened rod is engineered to handle the additional stress and higher RPMs associated with racing modifications.

Key Technical Specifications

Feature Specification Impact
Model Code 02B00880 Specific identifier for the 99mm Yamaha performance variant.
Length (Pitch) 99 mm Matches the factory center-to-center distance for the Aerox/R15 V3+ engines.
Material Forged Alloy Steel High tensile strength; resists bending and snapping under high loads.
Surface Finish Hard Anodized Enhances surface hardness and provides superior corrosion resistance.
Compatibility Yamaha 155cc VVA Fits Aerox 155, R15 (V3/V4), MT-15, and WR155.

Why Upgrade to the 02B00880?

  • Handle Higher Compression: If you are installing a 62mm or 63mm bore kit, the standard rod is prone to fatigue. The UMA Racing rod is built with a thicker cross-section to prevent failure.

  • Reduced Friction: Precision-engineered bearing surfaces ensure smoother power transmission from the piston to the crankshaft, which can lead to marginal gains in engine efficiency.

  • High-RPM Stability: Its lightweight yet rigid construction reduces reciprocating mass, allowing the engine to rev more freely and safely at the top end of the powerband.

  • Direct Fitment: Designed as an "Aerox Grade" component, it maintains the standard 99mm length, ensuring that your piston timing and compression height remain consistent with your specific bore-up kit's requirements.

Installation & Compatibility Notes

  1. Engine Type: While some listings categorize this broadly, it is specifically designed for 4-stroke liquid-cooled Yamaha engines (VVA platform).

  2. Professional Fitment Required: Installing a connecting rod requires splitting the engine cases and "truing" the crankshaft. It is highly recommended to have this performed by a specialist engine builder.

  3. Complete the Build: To maximize the reliability of your performance build, this rod should ideally be paired with UMA Racing high-speed bearings and a high-flow oil pump to ensure adequate lubrication under racing conditions.

Pro-Tip: If you are using this rod with a Stroker Kit, double-check your clearance. For standard bore-up kits (up to 183cc/200cc) that keep the stock stroke, this 99mm rod is a direct replacement for the OEM part.

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