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maXpeedingrods

maXpeedingrods Go Kart Forward Reverse Gearbox Kit 212cc 30 Series | Fit for 4 Stroke Engine, Works with 30 Series Torque Converter, 3 Shift Modes, #35 Chain, OE 2HP-13HP

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Availability: In Stock.
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Arrives Sunday, Aug 2
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Features

  • Gearbox Kit 30 Series -This forward reverse gearbox is suitable for go-karts,utility vehicles and other applications with engines up to 14HP and # 35 chain 12T and #40/41/420 chain 10T (Both sprockets included).Please note only use on 30 Series
  • Standard Adaptation Parameters-Shaft Size: 5/8" with 3/16" keyway; Gearbox Speed: 5/13 of the Clutch speed; Shifter Cable Length: 1540mm ( 5' ) ( 60'' ).Forward Ratio: 1:1:3,Reverse Ratio: 1:2:6
  • Complete Accessories-1x Forward / Reverse Gearbox with 3/16" Keyway;2x Mounting Plates;1x Shifter Disc;2x Shifter Cable;1x 10T and 12T Sprocket;1x Shifter Assembly
  • Product Use-This product was filled with oil before leaving the factory,when the oil is used up,it needs to be filled to half of the box,and this go-kart gearbox is use GL-5 gear oil
  • Three Shift Modes-This kit has three shift models: forward,reverse and neutral,which is for more convenient and easy operation.Made of high-quality metal,features with durable and lightweight for a long use life.Please contact us if you have any questions

Description

maXpeedingrods was founded in 2006 to make high-performance tuning accessible. We engineer premium upgrades—from forged connecting rods to T-Series suspension and turbo kits—that elevate driving excitement. Operating under IATF 16949 quality management systems, our certified manufacturing operations are trusted by over 4 million enthusiasts worldwide for consistent quality, performance, and exceptional value. Born in California's 2006 car culture, we revolutionized tuning to make high-performance upgrades accessible to all. Quality is our core, backed by expert engineering and real-world testing. Our manufacturing and development processes are managed under IATF 16949 and ISO 9001 certified quality management systems, ensure reliability and continuous improvement. From cruising to raw power, we transform your drive. Focus on easy installation and direct gains for an extraordinary experience.

Manufacturer: ‎Waverspeed


Brand: ‎maXpeedingrods


Item Weight: ‎12.23 pounds


Product Dimensions: ‎7.87 x 7.87 x 7.87 inches


Item model number: ‎YW65


Manufacturer Part Number: ‎YW65


Date First Available: January 3, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • So far so good.
Review Image by Rodney Ward
No instructions but I was going off the reservation anyway, it needed a bearing on the end of the 5/8 input shaft, too much torque. I'm using it on my golf cart, electric to gas conversion with a 17.5hp motor, switched everything to 40 pitch chain, shifts good so far, I mounted it with the shifter on top, its puking gear oil because its over filled but im sure that will figure its self out eventually. ... show more
Reviewed in the United States on June 17, 2025 by Rodney Ward
    • High quality item
This worked great for our custom go kart.
Reviewed in the United States on March 22, 2026 by A. Silva
    • There's no instructions
Review Image by Kindle Customer
Review Image by Kindle Customer
Review Image by Kindle Customer
I watched a dozen youtube videos it helped me understand the concept. First thing is that the shaft is over 5/8 I had to wallow out the pulley with a drill bit and for some reason the keyway wouldn't fit my pulley but I used one I had. this project took some fabrication and welding but if you are mechanicly inclined it is doable. ... show more
Reviewed in the United States on February 2, 2025 by Kindle Customer
    • Works.......and it's awesome
Like many others here, installed on a Coleman KT196. If you have any familiarity with a welder it is pretty straightforward to install. Took about 3-4 hours with a good deal of that dedicated to explaining what I was doing to a 6yr old. If I get motivated I will update with pictures, but basically the below sums it up: 1) Remove existing clutch and driven pully from Kart. Cut rear protector bar off 2) Remove spacer ring from driven pully housing (silver, drivers side). Place on drive shaft next to existing brass spacer bushing 3) use two 3" long section of angle iron (of appropriate thickness). Drill hole for 8mm bolt towards back top of each (for mounting of transmission). I bought a longer bolt (120mm) and used a 1" spacer between the trans mount (lower bolt hole) and the passenger side piece of angle. This allowed for a better position in welding to the existing motor mount structure. 4) Align drive sprocket with trans sprocket. Tack into place 5) Attached upper adjustment saddle (the gold "U" with a threaded rod sticking out. 6) Place a sleeve over this rod and, one aligned, weld to the top of the sleeve that previously held the driven pully shaft removed in step 1. You will need a longer bolt to re-attach the pully later (can get at hardware store) 7) Confirm chain length with new section of #40 roller chain. Adjust tack positions as required for adequate fit 8) Weld everything in place. The center distance between the drive and clutch shafts should be around 10 3/4" 9) Use belt 203597A (longer than factory). Attach chain/pullies/belt 10) Use some sort of "L" bracket to secure shifter in appropriate position being sure to attach cables to it before install 11) run cables back to trans, attach, make final adjustments. 12) (optional) weld rear protector bar back on as you please. This makes lifting the rear of the kart soooooo much easier. Can be a first-time fab project, but it will take awhile. Pretty straight forward if you have ever had to adapt two things together on a motorized vehicle that were never intended for such. Makes the kart noticeably faster. Took all of five minutes for above noted 6yr old to test it out after running full speed into a tree. ... show more
Reviewed in the United States on March 22, 2023 by SanmIAm
    • No instructions and not DIY.
I haven't installed it yet. There are no instructions and I've tried to watch YouTube videos. As mentioned by other people, you will need to take it to a professional installer. This is not a DIY to do on the weekend.
Reviewed in the United States on May 16, 2026 by Ken
    • Nut
Trans working good so far, only complaint is the nut they sent did not thread on, had to make a trip to hardware store 16mm 1.50 pitch
Reviewed in the United States on September 15, 2025 by Nathan
    • Nice
Haven't tried it yet.
Reviewed in the United States on April 29, 2026 by Heath Williams
    • Very poorly made. bought vevor instead.
Input shaft is not 5/8 its metric so off the shelf clutches wont work on it. i never even got it installed and while testing the function of the gear select it locked up from bad internal gear mesh.
Reviewed in the United States on July 4, 2026 by Unavailable

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