For a limited time you can get buy 5LB Syntha 6 100% whey & get free BSN mass stack trail kit for $49.99 at Muscle & Strength. Use coupon code ‘SYNTHA10‘ during checkout to take it to $45 . We couldn’t find the BSN trial kit for less than $17. Even with $6.87 hipping this is the best total price by at least $15. The Mass Stack 2.0 Trial Kit Includes: NO Xplode 2.0, 10 Servings; Cell Mass 2.0, 10 Servings; Nitrix 2.0, 30 Tablets.