77T Spur Gear (For S1 ) (1) - 66480596Genuine PR Racing 77T Spur Gear (For S1). Replacement drivetrain gear for compatible PR Racing models. Supplied in a pack of 1.77T Spur Gear (For S1 ) (1) - 66480596 SKU: 66480596£5.00PriceQuantity*Add to CartBuy NowNo Reviews YetShare your thoughts. Be the first to leave a review.Leave a Review