Overview
The 1UP Racing X-Gear 13mm Buggy Rear Springs — Extra Hard 9.50T (Blue) — are designed to deliver a game-changing performance upgrade for your 1/10 RC buggy. Crafted in collaboration with the renowned Japanese spring manufacturer X-Gear Co., these precision-wound 13mm buggy springs are engineered in Japan and rigorously tested by 1UP Racing's Factory Drivers across dirt, clay, glued, astro, and carpet surfaces.
Factory Drivers report their cars feel more "in the track" — delivering improved grip, sharper response, better handling over bumps, and smoother, more predictable jump landings. Extra Hard Blue rears are a proven baseline for B84 dirt buggy setups — pair with pink/silver fronts per Kurt's recommendation.
Key Features
- Developed in collaboration with X-Gear Co. of Japan
- 13mm diameter rear buggy springs
- Extra Hard tension — 9.50T rate (Blue)
- Precision-wound for consistent, repeatable tension
- Race-tested by 1UP Racing Factory Drivers
- Sold as a matched pair
Performance Benefits
- Improved on-power grip and steering response
- Better handling and composure over bumps
- Smoother, more predictable jump landings
- Unlocks personal-best laps and track records
Usage Notes
- Install as a matched pair on the rear of a 1/10 buggy
- Available across 9 tensions — mix front and rear to dial in balance
- Tested on dirt, clay, glued, astro, and carpet surfaces
- Pair with the complementary front or rear X-Gear spring for a balanced setup
What's Included
- (1 Pair) 1UP Racing X-Gear 13mm Buggy Rear Springs – Extra Hard 9.50T (Blue) – Part #10525
Summary
- Japanese-made X-Gear 13mm rear buggy springs
- Extra Hard tension — 9.50T rate in Blue
- Designed in Japan, tested in the USA
- Improved grip, response, and jump performance
- Must-have tuning option for 1/10 buggy racers
