SUNCOAST 48RE MASTER REBUILD KIT WITH BILLET INPUT SHAFT, BILLET FLEX PLATE, BILLET OUTPUT SHAFT AND BILLET FORWARD DRUM
48RE rebuild kit includes:
- 4 Raybestos GPZ forward frictions with steels
- 6 Raybestos GPZ clutches with steels
- 10 Raybestos overdrive clutches with steels
- Custom machined overdrive pressure plate
- .073 custom snap ring for forward clutch pack
- High flow 48RE transmission filter
- 48RE front pump bushing
- SunCoast custom billet carbon fiber band
- SunCoast 48RE paper/rubber/gasket kit
- 48RE thrust washer kit
- SunCoast Billet accumulator piston
- SunCoast billet intermediate servo
- 4.4 billet band lever
- Billet band strut
- Billet band anchor
- Billet Input Shaft
- Billet Forward and Direct Piston
- Billet Flexplate
- Billet Output Shaft
- Billet Forward Drum
This SunCoast Category 4 48RE rebuild kit includes everything necessary to rebuild your 48RE
transmission. This high-performance rebuild kit is for customers seeking improvement over the
stock unit along with improvements to the band, band actuation, servos, accumulator piston, input shaft, output shaft and forward drum.
The addition of the billet intermediate servo, billet band anchor and billet band strut allows
this kit to address the common know shortcomings of this 48RE transmission. This kit also comes
with a new billet blueprinted 4.4 band lever. The new thrust washer kit also contains selective
for setting endplay.
This kit also includes our one-piece billet 23-spline input shaft. This shaft is made from 300
maraging steel and is then heat treated and stress relieved to handle the additional demands of
higher torque and stress loads. This shaft is precision ground to make it a true drop in
This Category 4 48RE master rebuild kit also includes a band upgrade. While some of our other
kits include a Raybestos Pro Series carbon fiber flex band, in this kit we use our billet rigid
band. This band is CNC machined from billet steel and then lined with carbon graphite lining to
ensure unmatched performance by any other manufacturer.
Our Category 4 SunCoast 48RE rebuild kit also includes upgrades to the flexplate. The factory
48RE flexplate is replaced with our SunCoast billet 48RE one piece unit. This new 48RE flexplate
exceeds 29.3 SFI certification. This new billet one piece design is CNC machined from a single
forging, and specific reliefs are machined out between the converter mounting area and the crank
flange to enable minimal designed torsional flex.
We also include the addition of new apply pistons for both forward and direct. SunCoast Category
4 48RE master rebuild kits replace the factory cast pistons with new billet apply pistons. The
direct piston is also included with new custom calibrated springs. The forward piston is also
replaced with a new billet piece. These two improvements allow higher clamping forces without
any deflection occurring. Giving a much more direct shift feel and eliminating potential cross
leaks within the drum.
Another piece included in this kit is our full billet rear clutch retaining hub, made from 4140
heat-treated, stress-relieved billet steel versus the OE cast piece. The factory cast retainer
is known to fail in high torsional fatigue situations such as higher line pressure, commercial
use and heavy duty towing and hauling. This new billet piece is the correction you've been
Lastly, we include a billet output shaft. Designed for higher horsepower/torque engines, this
performance product has been tested in excess of 1,400 ft/lbs of torque. Shaft is machined from
300M material then Heat Treated for torsional strength and precision ground on all critical
This kit fits all 4WD 48RE transmissions.
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