This is not the CR4.4 chassis. This is the CR4.4 ECO variant. (Parts for CR4.4eco and CR4.4 will fit)  You have pointed out exactly the same problems as the Absima CR4.4 Patrol (and all other CR4.4 based vehicles, eg; Yikong 4107 etc)  The front bumper location is adjustable, the bumper mounting legs have multiple holes. I moved the bumper forwards one hole and trimmed some plastic from the rear of it to greatly reduce the tyre contact with the bumper. On my Patrol I have also fitted steel 3 piece bead lock wheels with brass hubs and very slightly smaller diameter tyres.  If You run  RTR with 'out the box' standard setup with its original wheels / tyres it will contact the front bumper (and the bodywork on some body shells) this is fixed by adjusting the front bumper and a little body trimming. The metal locking wheel hexes are available from Absima as they are standard on the CR4.4 chassis (Absima CR4.4 patrol and Yikong 4107)  I have been running the standard hexes trailing, crawling and hauling trailers of rocks back home from local mine sites (1.2 and 2.5 miles) for my back yard crawler test course. The Patrol has run well over 50 miles now with no slop or issues with hex wear. All my vehicles are run in all weather, all year round and have been fun to drive in rain, shine, mud, snow, ice etc.  Fitted my own rock-lights under wheel arches for night / winter crawling)  The hexes will eventually wear down and will be replaced with new metal locking hexes as they are relatively cheap parts. Even with these small issues the CR4.4 and CR4.4eco based vehicles are excellent value for money and the issues are very cheaply and easily fixed.  The first thing I do with any RTR is to strip down the drive train and properly pack the diffs, gearbox and portals with non emulsifying waterproof grease. The first upgrades I made to the CR4.4 were better wheels & tyres and changing the 32T motor for a 60T as I do not need it to do wheelies and stoppies in high gear as it did out the box on 100% throttle. I prefer to have vehicles perform closer to actual scale speeds with smooth, accurate control for technical crawling in low gear with throttle set around 40% to 50% and in high gear it is still plenty fast enough for trailing and hauling heavy trailers with rocks or other cars on them.  I mostly use 2S packs for crawling and 3S packs for hauling trailers & trailing.  I will be getting another RTR soon, plan to use the Absima CR4.4eco as the starting point for a new project as it simply cannot be beat for the price / performance balance and only needs proper lubrication and minimal changes to make it perform very well.  My only real issue with the Absima and Yikong vehicles is the use of 'mini' servos for gear change (and diff lockers on the CD4.4)  These mini servos have all failed, two were jittering and poorly performing out the box and the mini servo used for the gearbox gave up after around 30 miles of operation. Every vehicle that was produced with mini servos have had them all replaced with far more reliable fully waterproof micro servos. The servo upgrades were actually quite cheap when bought in bags of 10 or 20.  All in all good cars that only need a few easy mods. Note: it does not take much work to add remote servo controlled diff locking to the CR4.4eco later on if You want but the CR4.4eco manual diff locking is simple and effective with less maintenance required.  You will find these are very capable vehicles once you get the shock oil and springs dialled in. Keep on having fun, Happy Wheelin'.

I extended the body mount to give extra body lift and shave the bumper. Problem solved

Love the video, and love what you did with the RIG!!! NCE

i cut the bumper new wheels ,front brass climbs excellent.

I removed my bumper and put hex extensions on and it’s now perfect

Getting it ready for the next trail 👌💪🏽🔥

Good job with the upgrades

🔵🔵🔵🙂🙂🙂👍👍👍🔵🔵🔵

I’ve also drilled the back side of standard hex’s on another one I’ve run into this with just deep enough to fit over the thicker part.

I also ran into trouble with the yk4107 having too much flex.
I cut the bumper and installed 98mm wheels.
I still get wheel rub since now it can flex more due to smaller wheel size.

This car is just insane for its money. If its just a trail truck then there are only very few rtr crawlers.

To be fair even my LC80 fcx18 stripped the pin through the plastic hexes. I think it's a very common problem for most RC's with plastic hexes.. It is a very easy solution luckily

Finally got me some upgrade hex's and going out with it tomorrow so thanks again dude, I'll be trimming the bumper tonight 👌🙏

Great video thanks for sharing! Ive got the struggle of removing that same hex from the front axle, I'll be ordering those Absima hex's thats for sure! ❤👊

Good, useful information.

Great update buddy I'll need to do mine at some point 😊

I changed my hexes today actually. That's ironic. Lol you can raise that bumper mount up too. It'll give you more clearance than cutting it. Cutting it didn't work for me as I run my dual rate at Max throw. Lol 😅 nice tips video. 👊🏼🤙🏼

Do you have an link for the hex’s because I’m new to this and have been struggling to find the metal ones

Novidade (por assim dizer) que se for como os anteriores tinha uma bela relação qualidade preço (por cá compravas a pouco mais de 300 Euros quando os Traxxas TRX4  andavam nos 600!
Boa Info Share meu Amigo 🐼👌🏻

Awesome mate great info. It is a really good looking rig especially for the price.
But…..
Looks too clean. 😂😂😂
Give it some mud!!! 😂👊🍻

Please, can you show me the number of Absima item of those metal hex? I haven't been able to identify them in the Absima spare parts catalog. They definitely have a serial number that identifies them in the bags. Thanks in advance for any information! 🙂 And thank you for showed this problem of the model!!

Is just cuting the bumper enough