Corrosion resistance
Rust-resistant stainless steel
Key features and intended use for this kit.
Rust-resistant stainless steel
A2-70/A4-80 Stainless Steel
Model-specific maintenance & rebuilds
Model-specific stainless hardware for maintaining, repairing, and rebuilding this RC vehicle.
Fits: Kyosho Ultima SC Readyset 1/10 Electric 2WD SCT (30855)
OEM / model: 30855
In stock
Confirm this kit fits your RCMatch the RC model and OEM/model number shown above to your vehicle.
Match the RC model and OEM/model number below before ordering.
Review what is included, installation notes, shipping details, and complete kit information.
Kit Contents & Installation
Start threads by hand and seat screws fully to help prevent cross-threading.
Use blue threadlocker only on metal-to-metal threads; do not apply threadlocker to plastic.
After the first runs, inspect the hardware and retorque lightly as needed.
Details & Support
Over 99% positive over ~14,000 orders on eBay (last 12 months) — as of October 2025. View on eBay
Compatible RC Model:
Kyosho Ultima SC Readyset 1/10 Electric 2WD SCT (30855)
Compatible RC Brand:
Kyosho
RC Vehicle OEM / Model Number(s):
30855
RCScrewZ Kit Part Number:
kyo125
This model-specific stainless screw kit includes hardware for the verified RC chassis. Exact sizes, quantities, and screw styles vary by model.
This kit does not include items that require a different fitment, material, or hardware design:
Stainless Steel Screw Kit Compatibility:
Quick Fit Summary:
Compatible Brand: Kyosho
Fit: Model-specific fitment for Kyosho Ultima SC Readyset 1/10 Electric 2WD Short Course Truck.
Compatible RC Model/OEM Numbers: 30855
Scale: 1/10
Power Source / Fuel Type: Electric
Battery / Cell Count: Not currently verified
Drive Type: 2WD
Vehicle Type: 1/10 Electric 2WD Short Course Truck
Chassis: Kyosho Ultima SC Chassis (30855)
Era: Contemporary Era (2010-2019)
OEM / Models: 30855
RC Model Terrain: Off-Road: Dirt, Clay & Short Course Track
This Kit Details:
SKU: kyo125
MPN: kyo125
Kit Type: Stainless Steel Screw Kit
Screw Kit Piece Count: Not currently verified.
Product Material: A2-70/A4-80 stainless steel hardware
Product Color: Silver
Legacy Kit-Specific Notes To Preserve:
OEM / Model Code / Alias Coverage: 30855
Model Family Coverage: Ultima, Ultima SC, Short Course
Product Benefits:
Fitment Note: This kit is intended only for the Kyosho model family and OEM/model codes listed here. Match your chassis and model number before ordering.
Search-Friendly Notes: Compatible Kyosho RC maintenance parts for Kyosho Ultima SC Readyset screw kit and bearings.
Confirm your exact RC model, chassis configuration, and vehicle OEM/model number where applicable before ordering.
Do not assume fitment for custom conversions, mixed-chassis builds, modified vehicles, or unverified model variations.
Contact J-M SUPPLIES RC Parts Store before ordering when your vehicle does not match the compatibility details shown above.
Know another RC owner who could use this kit? Send them this exact product page.
These kits are verified for the same exact RC model and OEM/model number.