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2026 Edition · Zero-Fee Trading

Flip Knife Doppler Phase 4 Guide: Prices, Patterns & Instant Payouts

TL;DR
  • ▸Phase 4 is the black/blue Doppler pattern, distinct from Phase 2's pink and Phase 1's purple
  • ▸Flip Knife Phase 4 trades between $350 and $1,200 depending on float and blue percentage
  • ▸CSBoard charges 0% for deposits and direct item-for-item exchanges without money. P2P marketplace sales carry a 2% selling fee. Instant sell is a separate buyout offer; check its quote and the chosen payout method’s fees and timing before confirming.
  • ▸Gamma Doppler Phase 4 uses cyan/green hues and can fetch 20-30% more than classic Phase 4
No Middlemen, No Delays

On CSBoard, every P2P trade executes directly via Steam's official trade system — you never wait on a bot. Sellers get USDT instantly on TRC20, BEP20, Solana, or TON.

CSBoard charges 0% for deposits and direct item-for-item exchanges without money. P2P marketplace sales carry a 2% selling fee. Instant sell is a separate buyout offer; check its quote and the chosen payout method’s fees and timing before confirming.

The Doppler finish has 4 phases, each tied to a range of pattern indexes. Phase 4 indexes typically run from 418 to 617, producing predominantly blue and black. The Flip Knife Doppler in Phase 4 stands out for its high contrast, while the Flip Knife Gamma Doppler Phase 4 adds cyan and emerald accents.

Top 5 Flip Knife Phase 4 Patterns Worth Chasing

  1. 1

    Classic Doppler Pattern #456

    Nearly full blue tip with clean black spine — minimal green tint.

    ~$1,200
  2. 2

    Gamma Doppler Pattern #523

    Maximum cyan coverage on playside, almost no dark spots.

    ~$1,500
  3. 3

    Classic Doppler Pattern #588

    Symmetrical blue on both sides; great for backside enjoyers.

    ~$900
  4. 4

    Gamma Doppler Pattern #467

    Prominent emerald green stripe through the middle.

    ~$1,100
  5. 5

    Classic Doppler Pattern #501

    Budget-friendly Phase 4 with strong blue on inspect side.

    ~$750

Classic vs Gamma Doppler Phase 4: Quick Comparison

Classic Doppler P4Gamma Doppler P4
ColorsBlue / BlackCyan / Emerald / Black
Price Range (FN)$800 – $1,200$1,000 – $1,500
Best Float0.00 – 0.030.00 – 0.02
LiquidityVery high, several daily listings on CSBoardHigh, moves 48h on average
Pattern Index Range418 – 617418 – 617

Live Flip Knife Phase 4 Listings on CSBoard

Frequently Asked Questions

Check the pattern index on a third‑party database or in‑game inspect. Phase 4 indexes range from 418 to 617. Look for dominant blue/black color with little to no pink or green. On CSBoard, each listing displays the pattern index and phase tag, so you can filter directly with the tier selector or sort by pattern.

Sell or Buy Your Flip Knife Phase 4 Instantly

CSBoard charges 0% for deposits and direct item-for-item exchanges without money. P2P marketplace sales carry a 2% selling fee. Instant sell is a separate buyout offer; check its quote and the chosen payout method’s fees and timing before confirming.

Browse Flip Knife Doppler →
flipknifedopplerphasegamma

Live prices

Current market prices for the skins in this guide — updated continuously.