Babolat · Polyester
Babolat RPM Blast
Octagonal high-density co-polyester monofilament
Performance ratings
Overview
Babolat RPM Blast is one of the most iconic co-polyester strings ever made. When Rafael Nadal showed up at the 2010 Australian Open with this octagonally shaped co-poly, it changed the game. The octagonal structure with high-density co-polyester adds phenomenal rotation to the ball. The slick surface enables the strings to snap back with vicious force, resulting in extra RPMs. One of the most popular co-polys of all time, this firm and durable string is perfect for big hitters looking to load the ball with pace and spin.
Best for
- Heavy topspin players
- Advanced juniors with fast, full swings
- Players who generate their own power
- Western/semi-western grip users
Not ideal for
- Beginners or intermediates with short swings
- Players with arm issues - can cause tennis elbow
- Flat hitters
- Those seeking comfort
Pros
- Exceptional spin potential (97/100 in testing)
- Excellent control on fast swings
- Proven at the highest professional level
- Good for generating heavy topspin
- Surprisingly comfortable for a stiff poly
Cons
- Loses tension and playability quickly
- Can cause tennis elbow for some players
- Below average durability for a polyester
- Requires advanced technique to unlock benefits
- Not powerful - need to generate your own pace
Stringer notes
Pre-stretch recommended. String at lower tensions to maximize spin. Loses tension quickly in first 24-48 hours. Great as crosses in hybrid setups with natural gut.
Break-in period
1-2 hours. Settles quickly but starts losing playability soon after.
When to replace
Every 8-12 hours for competitive players. Tension loss is the main issue - string goes dead before it breaks.
Hybrid setup ideas
- VS Touch natural gut mains + RPM Blast crosses (Nadal setup)
- Xcel multifilament mains for comfort
- Great as crosses in any hybrid
Used by
Rafael Nadal, Dominic Thiem (former), Jo-Wilfried Tsonga (retired)
Specifications
- Type
- Polyester
- Construction
- Octagonal high-density co-polyester monofilament
- Gauges
- 16, 17, 18
- Colors
- Black, Yellow, Orange, Blue
- Set price
- $20–$21
- Reel price
- $130–$150
- Brand
- Babolat (France)
Sources & reviews
Data verified January 2025. Something wrong? Send a correction.
- Specs: Babolat Official
- Pricing: Tennis Warehouse
- Review: Tennis Warehouse Review
- Review: Tennis Companion Review