Performance
See dyno-tested horsepower and torque gains from Royal Thumper exhausts across the Royal Enfield lineup, backed by independent data.
The proof
Measured on the dyno. Not the marketing deck.
Every Silver Stallion system is tested for power, torque, and weight. Here is the full range.
Gains across the range
| System | Power | Torque | Weight | Family |
|---|---|---|---|---|
| Twins (Interceptor / Gt 650) | +2 BHP | +4.9 Nm | 5 kg | 650 Twins |
| Cruiser (Classic 650) | +2 BHP | +4.9 Nm | 6 kg | 650 Twins |
| Longshot (Super Meteor 650) | +2 BHP | +4.9 Nm | 6 kg | 650 Twins |
| Roadking (Shotgun 650) | +2 BHP | +3.5 Nm | 6 kg | 650 Twins |
| Outlander (Bear 650) | +2.5 BHP | +4.9 Nm | 3.5 kg (with mid-pipe) | 650 Twins |
| Shorty (Hunter 350) | +1.75 BHP | +3 Nm | 2.1 kg | 350 Singles |
| Sporty (J-Series) (Reborn / Classic / Meteor 350) | +1.5 BHP | +3 Nm | 2.5 kg | 350 Singles |
| Sporty Plus (J-Series) (Reborn / Classic / Meteor 350) | +1.5 BHP | +3 Nm | 3 kg | 350 Singles |
| Goan (Latest J-Series) (Reborn / Classic / Meteor 350) | +1.7 BHP | +3 Nm | 2.5 kg | 350 Singles |
| Sturdy (UCE) (Classic / Thunderbird) | +1.5 BHP | +3 Nm | 3 kg | 350 Singles |
| Sturdy Plus (UCE) (Classic / Thunderbird) | +1.5 BHP | +3 Nm | 3 kg | 350 Singles |
| Cross Country+ (Himalayan 450) | +2% BHP | +4% | 3 kg | Himalayan / ADV |
| Cross Country (Himalayan 450 / Guerrilla / Apex) | +2 BHP | +4 Nm | 3.1 kg (with mid-pipe) | Himalayan / ADV |
| Glide (Himalayan 411 / Scram / Scram 440) | +2 BHP | +4 Nm | 2.1 kg (with mid-pipe) | Himalayan / ADV |
LRT technology
Low radiant temperature construction with Italian-stitched, Mylar-coated blanket — durable, water-resistant, no loss of wool or change in sound.
Real materials
Stainless steel builds with premium finishes (Silver, Black Matte, Brushed) engineered for heat dissipation and longevity.
Model-specific
Each system is tuned for one platform — improved scavenging, reduced lag, and a purpose-built note.
- Slip-on — Replaces the stock silencer while keeping the OEM header — the easiest install, lighter tail, better sound, and solid gains. Ideal first upgrade.
- Full system — Complete header-back replacement (e.g. Himalayan Cross Country+) that eliminates restrictive headers and cat-con for the maximum measured gain.
Why it beats generic: universal slip-ons fit many bikes and prove nothing. Silver Stallion systems are engineered per Royal Enfield model with published dyno data — you know exactly what you are buying.