Renthal V3 Fatbar 31.8
The Renthal V3 Fatbar 31.8 is a World Cup–proven MTB handlebar built from high-strength 7‑series aluminium with shot‑peening and hard anodising. Available in 800mm width and multiple rise options for aggressive enduro and downhill riding.
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Product Details
Overview & Technology
Key Features & Real‑World Benefits
Fit, Sizing & Compatibility
Who This Bar Is For
Key Features
- ✓ World Cup–proven geometry used by championship teams
- ✓ High strength 7‑series aluminium alloy for ideal strength‑to‑weight
- ✓ Shot‑peened surface increases fatigue life and impact durability
- ✓ Corrosion and abrasion‑resistant hard anodised finish
- ✓ Laser‑etched positioning grid and width marks for exact setup
- ✓ 800mm pre‑cut width with 7° backsweep and 5° upsweep
- ✓ Available rises: 10mm, 20mm, 30mm to suit riding style
- ✓ Lightweight at approximately 315g for competitive performance
Specifications
Product Identifiers
Frequently Asked Questions
What clamp diameter is the V3 Fatbar and will it fit my stem?
The Renthal V3 Fatbar uses a 31.8mm clamp diameter and fits any stem designed for 31.8mm bars. It is not directly compatible with 35mm clamp stems unless you use an appropriate shim, but using a shim is not recommended for long‑term use — consider a 31.8mm stem for best fit and safety.
Can I cut the 800mm bar to a narrower width?
Yes — the Fatbar is supplied at 800mm uncut and can be trimmed to your preferred width. Always mark and measure before cutting, use a proper cutting tool for aluminium handlebars, and file and deburr the cut edge. Follow Renthal's cutting and installation instructions and check clamp placement after trimming.
How much does the V3 Fatbar weigh?
The listed weight for the 31.8mm V3 Fatbar is approximately 315g (for the specified configuration). Actual weight may vary slightly between rises and finishes, but it remains a lightweight option considering its high‑strength construction.
What are the rise, backsweep and upsweep figures?
This V3 Fatbar variant features a 10mm rise (other rises available: 20mm and 30mm), 7° backsweep and 5° upsweep. These metrics deliver a stable, upright hand position favored by enduro and downhill riders for control and comfort on technical terrain.
How durable is the finish and how does shot‑peening help?
The Fatbar's hard anodised finish resists corrosion and abrasion from mud, rocks and grips, keeping the bar looking and performing well under harsh conditions. Shot‑peening is a surface treatment that compresses micro‑defects and improves fatigue life, reducing the chance of crack growth after repetitive impacts.
Does Renthal offer a warranty or crash replacement?
Warranty and crash replacement policies vary by region and retailer. Check Renthal's official warranty terms and contact Forest Bikes customer service for local warranty support and available crash replacement programs.
Buying Guide
When choosing a downhill or enduro handlebar, focus on clamp diameter, width, rise, sweep and material. The 31.8mm clamp standard offers wide stem compatibility, while an 800mm width gives stability on high‑speed sections and technical climbs. Wider bars can be trimmed for fit; select rise to fine‑tune body position and handling. Material matters: 7‑series aluminium balances lightweight properties with impact resilience — coupled with treatments like shot‑peening and hard anodising, you get a bar built to withstand the demands of gravity riding and frequent crashes. Pick a reputable, race‑proven model like the Renthal V3 Fatbar if durability and precision are priorities.
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