Mo Makki’s 8-second turbo street ’Stang lays down 1.9-second 60-foot times with G-Force’s fabricated 9-inch IRS upgrade.

If you race a modern Mustang you have no doubt heard of G-Force Performance Engineering, as the company builds the rugged halfshaft upgrades deployed by Ford Performance, Roush and countless other builders of fast Mustangs. However, if you have a street/strip 2015+ Mustang making less than 800 horsepower, G-Force now has a more affordable option.

That option is the company’s new 850-horsepower-capable halfshafts (PN FOR10102A; $1,299). They are $400 less than the top-of-the-line Outlaw halfshafts that G-Force supplies to Ford Performance, but they will withstand what most street/strip S550 owners will throw at them.

“We decided to take these and keep them 28-spline, but CNC the internals out of billet the same way we would the Outlaws,” Jesse Powell of G-Force told us at The PRI Show. “They have a smaller axle bar than what you see here (on the Outlaw halfshafts) but they are significantly stronger than normal, so they are bridging that gap.”

Though they aren’t quite as robust at G-Force’s all-out halfshafts, these units are plenty durable, which is evidenced by the way the company backs them up.

“On these we warranty the stubs and the axle bars for life,” Jesse explained. “The CV joints carry a two-year warranty. Say in a couple years something breaks, wears down or starts making noises, you can send them in and we will rebuild them.”

G-Force now offers new 3 ½-inch aluminum driveshafts for both automatic- and manual-transmission 2015+ Mustangs.

So if you have a power-adder S550 you can enjoy yourself without worrying.

“A TVS, 7-psi guy can just throw a set of these in and a good driveshaft and he is ready to roll,” Jesse added.

In fact, to round out the upgrades needed to hold up to increased power levels that are common these days G-Force is also offering a 3 ½-inch aluminum driveshaft with billet flanges for the latest Mustangs.

“The S550s are hypersensitive to NVH, so we spent our time and money to offer quality aluminum driveshaft—for manual (PN FOR10200M; $899) and automatic (PN FOR10200A; $899) Mustangs—that is a good solution versus the really heavy, cumbersome CV stuff that is on the market now,” Jesse said.

If massive power and low e.t.’s are part of your plan, you can opt for G-Force’s fabricated 9-inch upgrade like Mo Makki did.

For those running megapower and lightning-quick e.t’s—like Mo Makki’s 8-second turbo S550—G-Force offers a fabricated 9-inch IRS upgrade (PN FOR10904A; $6,998–$7,158) that is robust enough to handle huge power, but well designed enough to operate seamlessly, even in a street car.

“It uses the same 31-spline axles and same outer stubs (as the Outlaw upgrades for the stock center section), but these are 35-spline inner stubs, which are just like what you would put in a solid axle,” Jesse said. “We fabricate the housing. It is completely bolt-in with not cutting and no welding. We typically recommend a Strange center section and most guys do the 35-spline S-Trac…”

If you have a powerful S550 and you want to learn more about the G-Force Performance Engineering product line, you can check out the company site here.