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Instant energy, enhanced and prolonged endurance, a boost in glycogen storage, and reduced fatigue and cramps—are any of these benefits what you are looking for?

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  • A $65.85 value—you save $15.90

Fueling & Usage Tips

Race PR Kit - AES vol 8.14

Race PR Kit - AES vol 8.14

The ultimate performance-enhancing trio for race days!

Race Day Boost

Race Day Boost

You're four days away from a personal best!

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Product Reviews

Rated 5 out of 5 by from No BS - It works! It works! I've been taking AFC, RDB, and ES for over six weeks or so now in preparation for the Boston Marathon next month. I am not going to try and feed everyone BS and say these products are a panacea, but I will say this; they work for me without a doubt. As an amateur athlete, I have tried everything...seriously. The PR Race Kit and the Daily Essentials Kit are my mainstays. It is a powerful and legal way to increase and sustain energy, improve performance, and realize gains. I plateaued for several months - as a matter of fact, regressing in some instances and I'm back to improving. I will continue to use the PR Race Kit and Hammer products. I am definitely sold.
Date published: 2014-03-15
Rated 5 out of 5 by from Best kept secret!!! I recently purchase the PR kit for my marathon. The last time I PRd was 3 years ago. I couldnt get faster. I was only getting more frustrated. And with each proceeding marathon I kept getting slower and mentally that messed with me. I tried this kit for my marathon on Sunday and PRd by over 15 minutes!!! This stuff works! I never felt fatigued. Mentally I felt strong. I couldnt believe how I didnt feel exhausted after mile 18, like I normally do. This is WORTH IT! Trust me. I've now completed 18 marathons, 3 50 milers and 1 50k. I know what works and what doesnt. I can't wait for my next marathon so I can use this again and hopefully shave off more time. I am now within 3 minutes of my Boston Marathon Qualifying time. That's huge!!!
Date published: 2016-05-19
Rated 5 out of 5 by from Great Results! I just ran the Cherry Blossom Ten Miler. The weather was awful to say the least, 50mph wind gusts, temps in the 30's and light snow. Not only did I PR it but I felt fresh when I finished up. I followed the suggested usage of the race day boost and anti-fatigue and also combined it along with the race day supreme caps. I am sold on these products along with all the other Hammer products I have tried since being fortunate to be one of their athletes. I 100% recommend this product!
Date published: 2016-04-08
Rated 5 out of 5 by from These products are excellent. I have used them in the past for previous events such as Half Ironman, Marathons...etc. and with good training and supplements I am able to complete events feeling good. Also, the representatives are very helpful with supplement information.
Date published: 2014-08-29
Rated 5 out of 5 by from Great results. I am impressed! I bought this product two months ago. I ran a half marathon and my time was nine minutes faster than last year. It definitely works miracles and I would definitely recommend. Thank you Hammer Nutrition.!!
Date published: 2014-07-14
Rated 5 out of 5 by from Can't Recommend Enough! From a comminuted hip fracture on 12/25/13 to a win on 6/7/14. Hammer products, including this package were a big part of my comeback.
Date published: 2014-06-19
Rated 3 out of 5 by from Seems to work Use in preparation for 5K races each month. Notice some improvement in overall time. I use in combination with Heed.
Date published: 2015-12-13
Rated 4 out of 5 by from Trail efficiency Great supplement for extreme mountain trail running, a must to have!
Date published: 2014-05-11
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