Model Collection: This page confirms fitment for one specific Kyosho RC model and lists the compatible Stainless Screw Kit and Bearing Kit options. Not sure what model you have? Use the Compatibility Hub or read the Compatibility Guide.
Kyosho Concept 30 DX/SE Helicopter #4089 — Compatible Kits by RCScrewZ (Screws & Bearings)
New here? Why buy model-specific kits (not assortments)
Available Parts for this RC Model
- Stainless Steel Screw Kit
- Metal-Shielded Bearing Kit
Note: Rubber-shielded bearings are typically not offered for aerial RC models.
RC Model Specs
- RC Model: Kyosho Concept 30 DX/SE Helicopter (#4089)
- Compatible Brand: Kyosho
- Series / Platform: Concept 30
- Scale: 30-size
- Fuel Type: Nitro & Glow Fuel
- Vehicle Type: Helicopter
- Production Era: Early Classics (1980-1989)
- OEM / Model Codes: 4089
RC Model Specific &
Compatible Kit Details
Stainless Steel Screw Kit
A2-70/A4-80 — Hex screws: Button Head, Socket Cap, Flat/Countersunk, Set Screws
- SKU: kyo090
- MPN: kyo090
- Color: Silver
- Material: A2-70/A4-80 Stainless Steel
- Screw Grade: A2-70/A4-80
- Coverage: Model-specific fasteners; replaces coarse screws
- Kit Contents:
- Socket Screws (with extras)
- Button Screws (with extras)
- Flat Head Screws (with extras)
- Set Screws (with extras)
- Nuts (with extras)
- Washers (with extras)
- Bondhus Short Arm Hex Wrenches (all sizes for your kit)
- Plastic Pit Case (durable, reusable, and great for storage)
- Pieces in Kit: 280+ Pieces
- Head Types: Hex screws: Button Head, Socket Cap, Flat/Countersunk, Set Screws
- Corrosion Protection: Rust-resistant stainless steel
- Maintenance: Re-check after first runs; retorque lightly
- Use case: Full RC Rebuild / Upgrade
- Install tips: Seat fully; avoid cross-thread
- Install tips: Blue threadlocker on metal-to-metal
- Ships from the USA
- Fast shipping with tracking
- Easy 30-day returns
- Earn rewards on every order
- Bundle and save with a Bearing Kit
- SKU: kyo090b
- MPN: kyo090b
- Color: Silver
- Type: Metal-Shielded (On-Road)
- Material: Steel Race-Grade Bearings
- Included Bearings:
3x6x2.5mm Bearings (9)
3x6x2.5mm Thrust Bearings (2)
5x10x4mm Bearings (3)
5x13x4mm Bearings (6)
5x16x5mm Bearings (2)
6x10x3mm Bearings (3)
6x12x4mm Bearings (3)
8x14x4mm Bearings (3)
8x16x5mm Bearings (2)
10x15x4mm Bearings (3)
12x21x5mm Bearings (2)
- RC Bearing Sizes: All Bearings Are Included + (1) Extra of Every Size for Spares
- Sealed Bearings: No
- Protection: Low-drag, not sealed
- Maintenance: Low-drag shields; keep dry; add light oil after cleaning.
- Use case: Race prep
- Bundle: Pair with Stainless Screw Kit for complete refresh.
- Install tips: Seat fully; Do not over-tighten
- Install tips: After cleaning: add light oil
All-Inclusive kits feature Standard, Flanged, One-Way, and Thrust bearings (as applicable).
View Cart & Checkout- Ships from the USA
- Fast shipping with tracking
- Easy 30-day returns
- Earn rewards on every order
- Bundle and save with a Stainless Screw Kit
Compatible Products — Add to Cart Below
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FAQs for Kyosho Concept 30 DX/SE Helicopter #4089 — Compatible Kits by RCScrewZ (Screws & Bearings)
How do I know these kits fit my Kyosho Concept 30 DX/SE Helicopter #4089?
Each kit on this page is made specifically for the Kyosho Concept 30 DX/SE Helicopter #4089. 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.
What's included in the stainless screw kit for Kyosho Concept 30 DX/SE Helicopter #4089?
Every RCScrewZ stainless steel screw kit for Kyosho Concept 30 DX/SE Helicopter #4089 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.
Which bearings are best for my Kyosho Concept 30 DX/SE Helicopter #4089?
For Kyosho Concept 30 DX/SE Helicopter #4089 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.
How does RC Pro Club help with Kyosho Concept 30 DX/SE Helicopter #4089 upgrades?
RC Pro Club is our rewards program for RC builders. Every order for your Kyosho Concept 30 DX/SE Helicopter #4089 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.
What's included in the RCScrewZ bearing kits for Kyosho Concept 30 DX/SE Helicopter #4089?
RCScrewZ bearing kits for Kyosho Concept 30 DX/SE Helicopter #4089 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.
Looking for a different RC model?
Start at the RC Model Compatibility Hub to pick your brand, series/chassis, and exact model, then jump straight to compatible stainless screw kits and bearing kits.