Seadoo Tunnel Reinforcement

JP RACING INC Sea-Doo 300 Tunnel Reinforcement Plate Fits ST3 and T3-R Hulls Protect your investment and ride with confidence. The JP RACING INC Tunnel Reinforcement Plate is engineered to prevent jet pump tunnel cracking — a common issue we’ve seen on both stock and modified Sea-Doo 300 models, including those built on the ST3 and T3-R hulls. ✅ Why You Need This: Over time and under high performance stress, the jet pump tunnel can become a weak point, especially on tuned or aggressively ridden skis. Our reinforcement plate is designed to strengthen this critical area before problems arise. 🔧 Easy DIY Installation: Compatible with OEM hardware — no custom parts needed. Simply apply epoxy and secure the plate using the existing bolts. Designed for Sea-Doo 300 models without pre-existing tunnel damage (cracks must be repaired before installation). Recommended adhesive: 3M Marine Adhesive or Epoxy for a durable, watertight bond. 🛠️ Made-to-Order Quality: Each plate is hand built in the US