SKU: 68378583043

Massive Speed Crankshafts and Drive Gears

Sale price$134.46 Regular price$149.40
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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

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Description

Massive Speed Crankshafts and Drive GearsOne fatal flaw of the Duratec MZR line since day one has been the complete lack of keys dowels locating devices on all of the cam timing components. While we're sure eliminating them made it far easier for robots to assemble the motors in production (and scared away shade tree mechanics from working on them), the possibility of slippage ensured disastrous results. The potential for slippage, while remote on a stone stock untouched grocery getter, was

One fatal flaw of the Duratec / MZR line since day one has been the complete lack of keys/dowels/locating devices on all of the cam timing components. While we're sure eliminating them made it far easier for robots to assemble the motors in production (and scared away shade tree mechanics from working on them), the possibility of slippage ensured disastrous results. The potential for slippage, while remote on a stone-stock-untouched-grocery-getter, was much more a threat on the modified, high RPM motors us folks like to build. 

Massive has stepped in and now offers a complete line up of keyed crank shafts and companion timing chain drive gears!!!

 

Cranks: 

We started with  NEW (high quality professionally remanufactured in the case of the 2.3 Ranger and 2.5 Dura - new from ford no longer available ) OEM crankshafts and added a proper key way to allow the timing chain drive gear to be positively locked to the crank in the event the crank pulley bolt should come loose. This will prevent COSTLY damage to your engine! Use with our keyed chain drive pulley.

2.0 Duratec - Factory FORGED Unit

2.3 Ecoboost - Factory FORGED Unit

2.3 Mazda DISI - Factory FORGED Unit

 

Gears: 

 

We started with A brand new Ford ? Mazda chain drive gear and EDM cut a proper keyway to allow the timing chain drive gear to be positively locked to the crank in the event the crank pulley bolt should come loose. This will prevent COSTLY damage to your engine! Use with our keyed crankshaft. Includes key.

We've always felt the cam gears don't need a key way or dowel - Allowing them to orbit whilst installing the timing chain is a must. Additionally, there is far less chance for slippage, reuse the now unnecessary diamond washers from the crank pulley on them if you please, run some loc-tite as well. 


Keyed gears and cranks are sold seperately

Modified IN HOUSE at Massive Speed's headquarters right here in the USA!!!

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68378583043

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LA
Cuba, US
★★★★★ 5
Great Treat
Size: 1 lbs
My Dog loves these treats, very healthy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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NOLA D
Louisville, US
★★★★★ 3
Only one ingredient
Size: 1-Pack (0.5 lbs)
I really like that. The product had only one ingredient which was sweet potatoes. They were well packaged in a reclosable bag. However, my dogs (a Morkie and a Malti-tzu) had no interest in them and would not even try it. I passed it on to someone else to try for their Shiba Inu.
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Reviewed in the United States on May 8, 2026
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Rameria
Louisville, US
★★★★★ 5
My pet loves it
Size: 1 lbs
Great for your pet
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Reviewed in the United States on May 28, 2026
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kab
Carnegie, US
★★★★★ 4
Usually good, but not this time
Size: 1 lbs
The last bag was very hard but I am softening them up with “sugar bears”. When we first started getting them you could easily cut them & my girl loved them. Then we got a bag that molded within a couple weeks. I tried others but my girl didn’t like any as well as these. Eventually I came back to Dave’s & it was fine until this last bag & she wouldn’t eat them.
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Reviewed in the United States on April 7, 2026
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Jeannie
Natrona Heights, US
★★★★★ 5
Good value
Size: 1 lbs
A good value. The treats are a variety of sizes and my dog really likes them. They are fairly chewy so he doesn’t gobble them right down. I like that they are a healthy treat, since he can eat high fat or high sodium treats.
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Reviewed in the United States on April 13, 2026

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