ROTAX AUTHORISED
Your edge at the track
About Wright Racing Engines
Authorised Rotax Service Centre specialising in engine builds, servicing, and race-day technical support. Built by racers, for racers.
Rotax Authorised
IAME Partner
Pakelo Stockist
@wrightracing
Jetting Calculator
⚙️ Override / Manual Entry
Recommended Main Jet
122
Senior MAX (125cc)
📊 Conditions Analysis
Density Altitude0m
ConditionSea Level
Base Jet122
Adjustment0 sizes
Standard jetting. Ideal conditions.
Premix Calculator
⛽ Premix Calculator
📌 Pakelo Recommended Ratios
Pakelo Silver Kart 2T2%
Pakelo Kart Competition1.5–2%
My Engine
Enter your dyno data · calculate trackside average power
🔧 Your Engine
Enter the peak HP figure from your Wright Racing Engines dyno sheet
🏁 Track Details
📡
Locating nearest circuit…
Or type a custom track name below
Auto-filled from track — tap to override
Enter your best lap or target lap time in seconds
Official Pakelo Stockist
Authorised Rotax Service Centre. All oils shipped direct from our workshop.
🟡
Pakelo Silver Kart 2T
Premium semi-synthetic 2-stroke oil. Recommended for all Rotax Max engines. Mixed at 45:1 (2.17%).
£25.20 inc VAT per litre
£21.00 ex VAT · +£7.20 delivery inc VAT
1
litres
Oil£25.20
Delivery£7.20
Total inc VAT£32.40
Opens your email app with your order details pre-filled
📌 Recommended Mix Ratio
Pakelo Silver Kart 2T2% · 50:1
💡 Use the Premix tab to calculate exact oil quantities for your fuel volume.
Authorised Rotax Service Centre
🔧 Our Services
›Engine builds & full rebuilds
›Rotax MAX servicing & repairs
›Carburetion & jetting advice
›Pakelo oil supply & delivery
›Race day technical support
›Engine sealing & certification
›Kart chassis setup advice
📱 Get In Touch
Instagram@wrightracing
StatusROTAX AUTHORISED
App v1.1 · Wright Racing Engines
Power curves modelled from WRE dyno data · Advisory only
Always verify with a qualified Rotax technician.
Power curves modelled from WRE dyno data · Advisory only
Always verify with a qualified Rotax technician.
Gear Ratio Chart
⚙️ Settings
Standard Rotax Senior MAX tyre = 0.676m
🔩 Front Sprocket
🔄 Equivalent Finder
Enter your current setup to find the nearest equivalent rear sprocket for every front size.
📌 Quick Reference
Sprint / TechnicalLower ratio · More rear teeth
Fast / FlowingHigher ratio · Fewer rear teeth
Rotax Senior range72T – 84T rear
💡 Top speed calculated at peak RPM. Actual top speed will vary with track gradient, driver weight and conditions.