KTM 390 Adventure S vs Base 350cc: Adjustable Forks, Tubeless Wheels Compared – Breaking News & Live Updates Today

The mid-capacity adventure segment in India just got a significant shake-up. With the introduction of the new sub-350cc KTM 390 Adventure, KTM is leveraging the GST 2.0 tax reset to offer a more accessible entry point into its adventure family. By reducing the engine stroke to qualify for the 18% tax bracket (down from the […]

The mid-capacity adventure segment in India just got a significant shake-up. With the introduction of the new sub-350cc KTM 390 Adventure, KTM is leveraging the GST 2.0 tax reset to offer a more accessible entry point into its adventure family. By reducing the engine stroke to qualify for the 18% tax bracket (down from the 40% ultra-luxury bracket for bikes above 350cc), KTM has managed to slice over ₹60,000 off the entry price.

The 2026 lineup now features a multi-tiered strategy. The new 349cc 390 Adventure serves as the value-for-money king, while the 399cc 390 Adventure We’ve analyzed the power drops, the tax benefits, and the equipment lists to bring you the ultimate breakdown.

Design & Build Quality

Despite the price gap, the sub-350cc 390 Adventure uses the exact same split trellis frame and WP Apex suspension hardware as the more expensive variants. KTM hasn’t “cheapened” the chassis to meet the tax bracket.

• Suspension: WP Apex USD forks (200mm travel) and rear monoshock (205mm travel).
• Dimensions: 830mm seat height and a rugged 230mm ground clearance remain standard.
• Weight: All models in this comparison tip the scales at an identical 181kg (kerb).
• Wheels: 19-inch front and 17-inch rear alloy wheels across the board.

GST 2.0 Section

Why the Engine Size Matters:

• The Tax Break: Under India’s GST 2.0 norms (effective 2026), bikes up to 350cc attract 18% tax, while those above 350cc jump to a massive 40%.
• The Savings: This tax shift is the primary reason the 349cc model is priced at ₹2.81 Lakh, whereas the 399cc “X” variant jumps to ₹3.43 Lakh.
• The Strategy: KTM is following the path blazed by Triumph with its 400cc-to-350cc domestic conversions to keep high-performance bikes affordable for the Indian mass market.

performance

The downsizing was achieved solely by reducing the stroke (from 64mm to 56.15mm), which means the engine retains its high-revving character but loses some of the “thump” and mid-range torque of the larger 399cc unit.

Standard Kit

Unlike the “X” variants of the past which stripped away electronics, the new 350cc 390 Adventure comes fully loaded with a TFT display, bi-directional quickshifter, and cornering ABS as standard.

• Electronics: Ride-by-wire throttle, Slipper clutch, and MTC (Motorcycle Traction Control).
• Braking: 320mm front disc and 240mm rear disc with Supermoto ABS mode.
• Clutch: Power Assist and Slipper Clutch (PASC) for light lever action.

Pricing & Variants (India)

• Availability: Both models are being sold concurrently to cater to different budget and performance needs.
• KTM 390 Adventure (349cc): ₹2,81,120 (Ex-showroom)
• KTM 390 Adventure: ₹3,43,000 (Ex-showroom)
• KTM 390 Adventure S (399cc): ₹3,96,000 (Ex-showroom)
• Note: The Adventure S includes tubeless spoke wheels and fully adjustable suspension.

Pros & Cons Summary

Which 390 Adventure to Buy?

• Buy the new 349cc KTM 390 Adventure if you are a value-conscious rider who wants the full KTM technology suite and premium hardware without the “luxury tax” penalty. It is the perfect all-rounder for 90% of Indian riding conditions.
• Buy the 399cc 390 Adventure

Technical Specifications (Quick Reference)