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R125 owners upgrade exhausts mostly for weight savings, sound, and looks rather than a huge power gain — this is a small-displacement single, so don’t expect a dramatic horsepower jump from any pipe. These are the brands that come up most often in R125 owner communities.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Akrapovič Slip-On Exhaust | $400–$600 | Amazon · eBay |
| 2 | LeoVince LV ONE EVO Carbon | $250–$350 | Amazon · eBay |
| 3 | Scorpion Stainless Steel Exhaust | $200–$350 | Amazon · eBay |
| 4 | Arrow Exhaust | $220–$400 | Amazon · eBay |
| 5 | GPR Exhaust | $180–$300 | Amazon · eBay |
The picks, in detail
Akrapovič Slip-On Exhaust
The brand most associated with a measurable, verified power increase rather than just sound and looks — a premium choice for riders who want real performance data behind the upgrade.
- Titanium or stainless construction
- Measurable dyno-verified power gains
- Premium fit and finish
- Genuine, documented performance improvement, not just marketing
- Premium build quality and finish
- Strong resale value as a recognized brand
- Most expensive option on this list
- Overkill if you’re purely after sound/looks rather than performance
LeoVince LV ONE EVO Carbon
A lightweight carbon-finish slip-on with strong brand recognition in the small-displacement sportbike scene.
- Carbon fiber outer sleeve
- Lightweight construction
- Distinctive LeoVince sound character
- Noticeable weight savings over stock
- Distinctive look and sound
- Well-established brand in the 125cc scene
- Carbon finish commands a price premium over steel/stainless options
- Sound character is a matter of taste, not universally preferred
Scorpion Stainless Steel Exhaust
More common among R125 owners than most competitors, per rider community discussion — a loud, good-sounding stainless system.
- Stainless steel construction
- Full system or slip-on options
- Strong, aggressive tone
- Most commonly chosen brand among R125 owners specifically
- Loud, satisfying sound reported by owners
- Stainless resists corrosion long-term
- Louder tone won’t suit riders wanting a subtle upgrade
- Full systems cost more than a simple slip-on
Arrow Exhaust
A well-known Italian performance exhaust brand offering an alternative sound and finish to Scorpion and LeoVince.
- Stainless or carbon options
- Racing-derived design
- Distinctive Arrow tone
- Well-regarded performance exhaust brand
- Good build quality across price tiers
- Distinct look versus the more common Scorpion/LeoVince choices
- Less commonly seen on R125s specifically than Scorpion
- Pricing varies significantly by specific model
GPR Exhaust
A loud, good-sounding alternative to Scorpion at a competitive price, per direct owner comparisons.
- Stainless steel construction
- Loud, aggressive tone
- Competitive pricing versus Scorpion
- Comparable sound quality to Scorpion at a similar price
- Good alternative if Scorpion isn’t available in your region
- Solid reputation in owner forums
- Slightly less common brand recognition than Scorpion or Akrapovič
- Loud tone, same tradeoff as Scorpion
Buying tips
- On a small-displacement single like the R125, expect sound, weight, and looks improvements more than a dramatic horsepower gain — Akrapovič is the exception with documented dyno gains.
- Check your local noise regulations before buying a loud system like Scorpion or GPR — small-bike exhausts can draw more scrutiny than you’d expect.
- A full system (headers + slip-on) costs more but gives a bigger change than a slip-on alone, which only replaces the end can.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.