GAS GAS TXT TRIALS 80 (2016-2019): A Trials Machine Built for Precision and Agility

Introduction

The GAS GAS TXT TRIALS 80 represents a focused evolution of Spanish engineering prowess in the trials motorcycle segment. Designed for riders who demand razor-sharp control and lightweight maneuverability, this 80cc two-stroke dominated youth and amateur competitions during its 2016-2019 production run. Let’s dissect why this bike remains a compelling choice for technical terrain enthusiasts.

---

Design Philosophy: Minimalism Meets Function

The TXT TRIALS 80’s design screams purpose. Its red/black/white color scheme isn’t just eye-catching – it’s a visual manifesto of GAS GAS’s racing heritage. The chromoly tubular frame keeps weight at 64 kg (141 lbs), crucial when you’re muscling the bike over boulders or pivoting mid-section.

Key design highlights:
- 590 mm (23.2") seat height: Low enough for quick foot dabs yet high enough for leg clearance during full compression.
- 1300 mm (51.2") wheelbase: The Goldilocks zone between stability and pivotability.
- Kickstart-only system: Reduces weight but demands proper technique – no push-button cheats here.

The 2.4L (0.63 gal) fuel tank isn’t meant for marathons. It’s a reminder: this machine exists for 2-3 hour trials, not cross-country adventures.

---

Engine Performance: The Angry Bee

At its heart lies a liquid-cooled 79.1cc two-stroke that revs like an angry hornet. The 43mm x 54.5mm bore/stroke ratio prioritizes torque over top speed – exactly what trials demand.

Carburetion nuances:
- 2016 models used Dell’Orto PHBG21DS
- Later years switched to PHBL21DS/BS variants
All versions shared crisp throttle response when properly jetted. The 6-speed gearbox is overkill on paper but proves useful linking technical sections.

Power delivery characteristics:
- 0-30% throttle: Manageable for beginners
- 30-70%: Linear torque surge
- WFO: Unnecessary in trials, but hilariously snappy

The hydraulic diaphragm clutch (GG 1/3 system) offers featherlight modulation – critical when balancing on rear wheels.

---

Handling: Mountain Goat DNA

Suspension setup:
- Front: 40mm adjustable telescopic forks (177mm/7" travel)
- Rear: Öhlins-style Olle monoshock (164mm/6.5" travel)

The suspension isn’t plush – it’s communicative. You’ll feel every pebble, but that’s the point. Setup tips:
- Soften compression for rocky riverbeds
- Stiffen rebound for log hops

Braking performance:
- Front: 4-piston floating disc – strong enough to stoppie up inclines
- Rear: 2-piston disc – modulate carefully to avoid washouts

Tire choice matters:
- Front: 1.60-19 (narrow for precise steering)
- Rear: 1.85-17 (bite without excessive bounce)

---

Competition: How It Stacks Up

The TXT TRIALS 80 faced fierce rivals:

1. Beta Evo 80
- Pros: Softer power delivery for novices
- Cons: Heavier at 67kg (148 lbs)

2. Sherco ST 80
- Pros: Innovative carburetor placement
- Cons: Less adjustable suspension

3. Ossa TR 80
- Pros: Fuel injection (in later models)
- Cons: Complex electronics for a trials bike

GAS GAS advantages:
- Best power-to-weight ratio in class
- Most customizable suspension
- Parts compatibility with bigger TXT models

---

Maintenance: Keeping the Spaniard Sharp

Critical upkeep areas:

1. Carburetor Care
2. Clean every 20 hours (trials dust is abrasive)

3. Upgrade to stainless jets (available at MOTOPARTS.store)

4. Air Filter Rituals

5. Oil foam filter after every ride

6. Consider twin-air replacements

7. Suspension Service

8. Change fork oil every 50 hours

9. Shock rebuilds annually for serious riders

10. Brake Upgrades

11. Swap to sintered pads for wet conditions

12. Stainless brake lines improve feel

13. Drive Components

14. Replace chain slider kits preventatively
15. Ultra-light sprockets reduce unsprung weight

---

Conclusion: Timeless Trials Tool

The GAS GAS TXT TRIALS 80 isn’t about nostalgia – it’s a still-relevant tool for developing precise riding skills. While modern electric trials bikes gain attention, the visceral scream of its two-stroke and mechanical purity keep it alive in garages worldwide.

For owners looking to refresh their steed, MOTOPARTS.store offers everything from OEM-spec clutch kits to performance exhausts. Remember: in trials, the rider makes the difference – but having a well-prepped GAS GAS certainly helps.

---

Specifications sheet

---