If you run a Serpent 733 and want tougher drive components, the Serpent 804103 Kevlar Reinforced Belt Set is a direct upgrade. The kit includes three belts: a rear belt 5mm wide with 186 teeth, a front belt 4mm wide with 195 teeth, and a side belt with 378 teeth to cover the full drivetrain.
Keepsake-grade Kevlar fibres reinforce these belts to reduce stretch and abrasion under race conditions. The correct tooth counts help maintain smooth power flow, lowering the risk of belt jump or uneven drive under hard acceleration.
Designed to match the Serpent 733 without modification, this Serpent 804103 set is straightforward to fit so you can swap belts between sessions and get back to tuning or racing quickly.
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