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🚀 Elevate your RC game with flex that flexes back!
INJORA’s CNC aluminum Shock Flex Blades are a lightweight, precision upgrade designed specifically for the TRX4M Defender Bronco 1/18 RC crawler. Weighing just 8 grams total, these blades double your suspension flex without compromising ride height or scale appearance. Easy to install and highly rated by the RC community, they deliver exceptional off-road performance and durability, making them the go-to mod for serious mini crawler enthusiasts.






| ASIN | B0BZ828344 |
| Age Range Description | Unisex Adult |
| Best Sellers Rank | #36,054 in Toys & Games ( See Top 100 in Toys & Games ) #10 in RC Vehicle Shock Kits |
| Brand Name | INJORA |
| Color | Black |
| Customer Reviews | 4.2 out of 5 stars 579 Reviews |
| Educational Objective | Game, play |
| Included Components | Shock Flex Blades |
| Is Assembly Required | Yes |
| Item Type Name | Shock Flex Blades |
| Manufacturer | INJORA |
| Manufacturer Maximum Age (MONTHS) | 36 |
| Manufacturer Minimum Age (MONTHS) | 1 |
| Manufacturer Part Number | 4M-33 |
| Material Type | Aluminum |
| Model Number | 4M-33 |
| Number of Players | 1 |
| Operation Mode | Manual |
| Power Source | rechargeable battery |
| Set Name | TRX4M |
| Size | Small |
| Subject Character | Shock Flex Blades |
| Supported Battery Types | No batteries required |
| Theme | RC |
| Unit Count | 1.0 Count |
A**R
Night & day from stock! Best cheap/quick upgrade for the TRX4M’s!
Honestly great product, probably the best functional upgrade i’ve done on my mini Defender. Great fit, very easy to install, & the best bang for buck mod to keep this car still scale looking enough while adding a ton of travel/flex!! On level ground it sits about stock ride height maybe a tiny bit lower, but the flex is easily doubled or more from stock! Very highly recommend.
B**Y
insane flex
i know some people say they don’t help but screw that they work so good and give so much more flex it’s crazy especially when paired with 59mm shocks and high clearance links but the only downside is that if you tighten the screws a lot that hold them onto the chassis then they don’t move very well so i would suggest put a nut on the screw that hold them onto the chassis if you have an aftermarket chassis
4**E
Great product but….
So overall this is another good quality product. Installation, fit and finish is of good quality and all goes together very good. However from my personal experience (not very much) I’m having a hard time with these. When it comes to articulation, these added so much flex to my stock TRX4m. Crawling was so much better on not much of an incline. When crawling or climbing an incline, this made my machine worse than stock. It will twist and lift the front end so much that it will flip. I’ve messed with it over and over again with different combinations and no luck. I did leave the top half installed to relocate the upper shock mount without modding the frame and that helped with stock flex a little. Ounce I removed the bottom shackle it went back to climbing like a champ. So good product and idea but I didn’t have much luck for my limited parts and experience.
R**Y
Tons of flex!
These add a ton of flex and fit right on my stock chassis. Had slight rubbing issues but that's all sorted out. easy to install and add a lot of performance to a rock crawler. Look super cool when flexed out and i dont really notice the weight. Good price for more flex
C**X
More than you can use.
To start, my comments are based on my usage of the Injora Carbon Fiber LCG Chassis and stock trx4m shocks as well. If you have the Injora CF LCG Chassis, (maybe even stock chassis) on the front your flex is limited by the axle links hitting the servo mount, so using the uppers is useless. Not to mention without the stock shock mounts from your OEM chassis to limit them, the blades can flip and bind. (Stupid Design Not To limit this for their own CF chassis) The flipping of the blade is also a problem on the rear as well, if you hit max flex, the blades also could flip and bind up. So I decided to only use the lowers and I still get more flex than the F150 Body will allow without body modification. Overall, honestly and i say this based on not confirming my suspicion, but I think you could get nearly the same amount of flex just using 60MM or longer shocks. The ask just isnt justified with their LCG being that im only able to use the lowers, and still am unable to use all the travel on the front blade. They are beautiful parts, and well made, just not happy that i can only benefit form 50% of the rear, and maybe 35% of the fronts..... 3 stars
J**D
Packaging mislabeling issue
I ordered the Flex Blade kit for the TRX4M but received the Rock Light Kit with Controller instead. Package was labeled incorrectly. (Note:I am disabled and would have to drive a distance to get to a UPS drop off site to return for replacement, provided others aren’t mislabeled as well.) UPDATE: Injura reached out to me and after looking into the issue, they made sure to remedy the situation and sent me the correct item I ordered. Great customer service on their part!
D**8
Best cheap upgrade.
A lot of things I read said these doesn't work on the front of a trx4m. They do. I still have a stock servo maybe that's why. This is the best and cheapest upgrade I've done to my little truck.
B**5
Too much angle for center drive line
Too drastic of an angle for the center drive line when fully flexed. The drive line literally cogs and gets bound up. I decided to keep the tops on but bottoms are a no go. Definitely not on the front. They get in the way of the steering linkage. Great idea and they do bolt on but bad functionality.
E**O
Troppo costose ... per la pena.
Ottima fattura e rifinitura. Sono però calcolati per un utilizzo non specifico, ed in alcuni casi potrebbero avere problemi: controllare prima la compatibilità col vostro camion. Secondo me il prezzo di 18€ è esagerato, in quanto si trovano elementi simili se non analoghi a 1/3 del prezzo, che funzionano ugualmente. Mancano le istruzioni, serve occhio e volontà di ricercare le giuste info (scritte, video, foto, ecc) per un corretto montaggio ed utilizzo. Per il resto, funzionano ... anche se, non sempre al 100% delle potenzialità. Se potessi restituirle, lo farei e acquisterei quei modelli più economici. Metto comunque 3 stelle, come sufficienza in generale.
B**E
Crazy
Crazy difference, articulation is absolutely insane. 10/10 would recommend to a friend
D**X
Parfait
Parfait
C**E
Lätta att installera
Hög kvalitet lätta att installera för att få lite mer höjd på min trx-4m.
P**K
ok
ok
Trustpilot
3 weeks ago
2 weeks ago