Compatible RC Parts for: Kyosho Caliber 5 Nitro RC Helicopter (21250)

Each kit on this page is made specifically for the Kyosho Caliber 5 1/10 RC Helicopter Nitro (#21250). We cross-check scale, layout and hardware locations against the factory manual so you get the right stainless screws and bearings for this exact RC heli—no measuring or guessing.

Every RCScrewZ stainless steel screw kit for Kyosho Caliber 5 1/10 RC Helicopter Nitro (#21250) includes a model-specific mix of socket head, button head, flat head and set screws, plus matching nuts and washers—with extras of the most commonly used sizes. Each kit also comes with Bondhus short arm hex wrenches in the sizes used on your heli and a durable plastic pit case you can reuse for storage and organizing hardware. Exact counts and sizes vary by model. The kit does not include electronics, servos, motors or engines, blades or airframe parts.

For Kyosho Caliber 5 1/10 RC Helicopter Nitro (#21250) builds, RCScrewZ kits use precision metal-shielded bearings. Helis are typically flown in cleaner environments, so low-drag metal shields give smooth rotation and consistent head speed without the extra friction of rubber seals. We recommend keeping the model away from heavy dust and moisture and cleaning bearings as part of your regular maintenance.

RC Pro Club is our rewards program for RC builders. Every order for your Kyosho Caliber 5 1/10 RC Helicopter Nitro (#21250) earns points you can redeem for discounts on future screw kits and bearing kits. When you grab multiple kits for the same heli—like a stainless screw kit plus a matching metal-shielded bearing kit—you earn more points in a single order and unlock bigger savings over time.

RCScrewZ bearing kits for Kyosho Caliber 5 1/10 RC Helicopter Nitro (#21250) are built as a complete upgrade package. You get every bearing needed for key areas like the rotor head, main shaft, tail rotor and drivetrain, plus one extra of each size for quick spares. Kits can include standard and flanged bearings where your heli uses them, so you are not hunting for odd sizes or partial sets. Each kit comes in a reusable storage case that keeps bearings organized in your field box and ready for the next rebuild.