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Transmissions
Assembled here in the USA with proven parts and techniques. Tow. Street. Race. GET MORE!
TH400/4L80E Aluminum Direct Drum & Extra Large Sprag
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10L90 XPL PRO-LOC BILLET TORQUE CONVERTERThis new 10-Speed Bolt-Together Torque Converter is manufactured from a solid piece of 7075 T6 billet aluminum plate versus round bar like so many other manufacturers. We take this extra step in manufacturing from solid billet plates due to the superior heat-treating characteristics. When using round bar, we see the tempering is not as solid in the center as with the solid plate. Using this type of material increases manufacturing cost initially, as well as machine operation time, however is a necessary step when considering the high inertia and its effects on ballooning the converter.
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Suncoast Performance
Do What You Cant...
A look into the lifestyle
These knuckleheads think diesels are stupid. What do y'all think?
6L80E BILLET SHAFT AND HUB
An essential upgrade for any hard-working GM 6L80 transmission, this Sonnax heavy duty 4-5-6 clutch hub and intermediate shaft guarantees maximum protection against shaft breakage and clutch failure in any vehicle pushing stock components to the limit.
The one-piece design is custom forged from ultra high-strength 300M billet steel, then heat treated and shot peened for added durability. This combination of features guards against broken 4-5-6 hubs and the risk of rear splines shearing off — chronic failures in performance cars and trucks as well as heavy commercial vehicles.
SunCoast carries quality-designed and manufactured transmission parts & some badass apparel to rep that SunCoast Life. Whether sled pulling, drag racing or hauling heavy loads, SunCoast has you covered.
Heavy Duty Input Shaft
Heavy Duty Output Shaft 4WD/AWD
Pinless Accumulator Piston Kit
Dealer Benefits
Leading the diesel transmission industry in innovation. SunCoast takes great pride in providing their authorized dealers with the best products and most accurate tech support possible. This translates to a seamless experience for the customer from the manufacturer to the dealer.
