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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Big Gun 13-16 John Deere GATOR RSX 850i Power BoxThe Big Guns TFI (Throttle and Fuel Injection) Power Box delivers an effortless performance boost by optimizing throttle mapping and fuel delivery. Simple to install and tuned for broad compatibility, this plug and play module sharpens throttle response, smooths power delivery, and enhances mid range torque, all without sacrificing reliability. Designed with durability in mind, the TFI Power Box features rugged construction and weather resistant
The Big Guns TFI (Throttle and Fuel Injection) Power Box delivers an effortless performance boost by optimizing throttle mapping and fuel delivery. Simple to install and tuned for broad compatibility, this plug-and-play module sharpens throttle response, smooths power delivery, and enhances mid-range torque, all without sacrificing reliability. Designed with durability in mind, the TFI Power Box features rugged construction and weather-resistant sealing to withstand tough conditions.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Buy lots of them!
Size: X-Large Big Tall, Color: Blue
My husband is big and tall, he wears XXL, these shirts are long enough for his waist, wide enough for his shoulders. They are very soft. They wear well. If you leave them in the dryer too long, it is easy to get the wrinkles out. Mist it with water and throw them back in and Wal-La no wrinkles. Love these shirts. Very well made.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
True to size and great design
Color: White, Size: X-Large
I loved the shirt. It was sized to fit my body type. Not to big, not to small. The design is amazing.
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Watch size!!!👍
Color: Gold Yellow, Size: XX-Large, Color: Gold Yellow, Size: XX-Large
Well, right outta the bag it fits Perfectly!!! I love it what more could I say? Very delighted!!! I can even button the top button😧😮🤪🤜🤛👏👏👏👏👏
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Shirt
Color: Navy Blue, Size: Large
Good quality
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Great looking shirt
Color: Royal Blue, Size: XX-Large
My husband looked great in this shirt. It did not wrinkle easily
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Reviewed in the United States on February 15, 2026