Are these version 2? Same as chrome ones.

Yes they the same, I have both sets so, I can confirm that they're the same

Whould these fit fms fcx or furitek caymen? Thanks

They are for 1:18 scale crawlers, but they're only a few bucks, so try em out. You could probably cross reference sizes though to find out for sure. I know the hole to attach the shaft is a d-shaped hole.

Any idea if these will work with the K10 High Trail?

I use them on my K10 Monster Truck build with 59mm INJORA shocks. It's at their limit, but functional. I think INJORA just came out with a stainless steel version, specifically for the K10, on their website.

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INJORA 22g Drive Shaft Steel Black Front Rear Center Shaft with D Shaped Hole for TRX4M Defender Bronco 1/18 RC Crawler Upgrade, 2PCS

INJORA 22g Drive Shaft Steel Black Front Rear Center Shaft with D Shaped Hole for TRX4M Defender Bronco 1/18 RC Crawler Upgrade, 2PCS

4.7/5

Product ID: 635181320

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🔩D-shaped & rounded rectangle holes for secure fit

⚙️Precision scale joint & spline diameter

🛠️22g hardened steel build

Description

⚙️ Upgrade Your RC Game with Precision Steel Power!

LIGHTWEIGHT YET STRONG - At just 22g, these shafts balance durability with minimal weight, optimizing your TRX4M Defender Bronco’s performance.
RUGGED STEEL DURABILITY - Crafted from hardened stainless steel to resist rust and wear, ensuring your RC crawler stays battle-ready.
AUTHENTIC SCALE DETAILING - Scale joint and spline diameters mimic real-world mechanics for a hyper-realistic upgrade that turns heads.
PRECISION FIT ENGINEERING - D-shaped and rounded rectangle holes deliver a tighter, more reliable connection to transmission and axles—no wobble, all control.
EASY UPGRADE FOR SERIOUS CRAWLERS - Designed specifically for 1/18 TRX4M Defender Bronco models—upgrade your rig and join the elite RC community.

INJORA’s 22g hardened steel drive shafts are engineered for the 1/18 TRX4M Defender Bronco, featuring rust-resistant construction, precision D-shaped and rounded rectangle holes for a secure fit, and scale-accurate joint dimensions. This 2-piece set offers a durable, lightweight upgrade that enhances both performance and realism for serious RC crawling enthusiasts.

Specifications

Educational Objective(s)	Construction Skills
Model Number	4M-50BK
Number of Game Players	1
Assembly Required	Yes
Batteries Required	No
Batteries Included	No
tech_spec_battery_description_toys	No batteries required
Material Type(s)	Steel
Colour	Black
Product Dimensions	2.54 x 2.54 x 5.08 cm; 50 g
Item model number	4M-50BK
Manufacturer recommended age	14 months and up
Manufacturer	INJORA
Item Weight	50 g

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