4" x .083" Aluminum Driveshaft with NEAPCO forged solid-cross non-greasable u-joints and your choice of transmission slip yoke. Save weight and acheive longer lengths than steel one-piece driveshafts are capable of. Built to order and high-speed balanced for a perfect fit and smooth operation through your entire power band. 
 
Option to upgrade to a Sonnax chromoly slip yoke for increased strength +$105
 
**DO NOT ORDER if your measurement is over 74"**
 
This driveshaft is available with the following:
Transmission slip yokes 
Option 1: 27 Spline 1350 series (T350, Powerglide, 200R, 700R, T-56)
Option 2: 32 Spline 1350 series w/Counterbore (T400 with threaded output shaft. This slip yoke          replaces the bolt down style yoke)
Options 3: 32 Spline 1350 Series (T400 without threaded output shaft)
Option 4: 32 Spline 1350 Series (4L80E, 4L85E, NV3500)
Option 5: 28 Spline 1350 Series (C4, T-5, AOD)
Option 6: 31 Spline 1350 Series (C6, Tremec)
(Other options may be available but will come at an added expense) 
 
Rear U-Joint Series: 
1330 (3 5/8" Wide, 1 1/16" Cap Diameter)
1330 LC (3 5/8" Wide, 1 1/8" Cap Diameter)
3R (INSIDE C-CLIP found on GM, 1 1/8" Cap Diameter)
1350 (3 5/8" Wide, 1 3/16" Cap Diameter)
 
A flange may be added to this driveshaft for additional cost, please contact us.