Bollinger Bands based on SAR (MT4) — review, price and free alternatives

In this review and analysis for 2026 we examine live and backtest results to quantify how the indicator defines expected price tolerance after SAR reversals.

What makes Bollinger Bands based on SAR unique is the hybrid approach of combining SAR's reversal timing with a volatility envelope. Instead of relying on raw SAR dots that can oscillate, the author, Vladimir Mokrushin, uses a simple moving average of SAR values to smooth transitions and then applies upper and lower bands that represent probable price boundaries. The algorithm calculates SMA over N SAR points, computes standard deviation across the same series, and shifts the SMA by user-chosen multipliers to form bands. This gives traders a dynamic channel tied directly to SAR behavior rather than price-derived moving averages.

The indicator handles trending markets with periodic pullbacks well and provides clearer entry zones on trend continuation after SAR flips. It is less effective in extremely choppy, low-volatility markets where SAR itself produces frequent false signals. Risk management is built into the concept: bands provide objective levels for stop placement and profit targets, and recommended settings aim to limit run-up drawdowns. Expected performance characteristics include improved signal-to-noise over raw SAR, moderate trade frequency on higher timeframes, and measurable reductions in stopouts when used with position sizing rules on MT4.

The risk profile for Bollinger Bands based on SAR is moderate when combined with disciplined position sizing. The indicator itself does not place stops; users should set stops just beyond the nearest band edge or use a volatility multiplier to define stops. A fixed fractional sizing approach of 0.5–1% risk per trade is appropriate for the typical drawdown profile observed. Vulnerabilities include sudden market gaps, low-liquidity sessions, and extended ranging phases where SAR flips frequently. Recommended minimum account size depends on lot sizing and broker margin, but a $1,000 account is a reasonable baseline for micro lots while a $5,000 account better supports standard lot testing.

Install the Bollinger Bands based on SAR indicator by placing the provided MQ4 or EX4 file into the MT4 Experts or Indicators folder, then restart MT4 to load it. Attach the indicator to your chosen chart and configure key parameters: SAR SMA period, band deviation multiplier, shift settings, and timeframe smoothing options. Recommended brokers are ECN or low-spread DMA providers to minimize slippage on reversal entries. Optimal chart timeframes are H4 and D1 for stability, and H1 for higher frequency testing. Run strategy tester backtests and forward demo trading for at least 3 months before live deployment.