Steel Flywheels
Massively improve your FRC and FTC flywheel shooter’s consistency and range with SWYFT Steel Flywheels — simple, brutally effective inertia weights precision-cut from 6.2 mm (0.244 in) thick mild steel using fiber laser technology.
Designed and battle-proven by top teams, these flywheels add the rotational mass you need to turn inconsistent shots into unstoppable, long-range rockets.
Key Features
- Serious Inertia: Thick 6.2 mm mild steel dramatically increases moment of inertia for smoother spin-up and far better shot-to-shot consistency.
-
Two Proven Sizes for FTC:
- 72 mm diameter – perfect balance of weight and space
- 96 mm diameter – maximum inertia when you need extreme range
- New 4" OD Variant for FRC Robots: 101.6 mm diameter flywheel specifically engineered for FRC, with a smooth, deburred finish for clean stacking and clamping.
- No Finish – Pure Performance: Raw steel construction (expect minor surface rust over time — intentional for maximum mass at minimum cost).
Specifications & Recommendations
| Diameter | Mass | Moment of Inertia | Recommended Quantity (FTC) | Recommended Quantity (FRC 2026) |
|---|---|---|---|---|
| 72 mm | 0.186 kg (0.41 lb) | 480 g·cm² | 3x for short range · 4x for long range | — |
| 96 mm | 0.339 kg (0.75 lb) | 1550 g·cm² | 2x for short range · 3x for long range | — |
| 4" OD (101.6 mm) | 0.256 kg (0.565 lb) | 4032 g·cm² | — | 2x per shooter |
FRC 4" Variant Notes:
- Ideal for clamping to 1/2" hex axles using the SWYFT 1/2" Hex High Strength Clamping Split Hub (sold separately).
- Smooth, deburred finish for clean stacking and clamping.
- Stack multiple flywheels and clamp them all at once for easy inertia tuning.
Drop these steel flywheels onto your shooter and instantly feel the difference: tighter shot grouping and longer range. Simple, affordable, and devastatingly effective — now with a dedicated FRC variant optimized for the 2026 game.
CAD&Drawing
Original: $6.49
-70%$6.49
$1.95







Description
Massively improve your FRC and FTC flywheel shooter’s consistency and range with SWYFT Steel Flywheels — simple, brutally effective inertia weights precision-cut from 6.2 mm (0.244 in) thick mild steel using fiber laser technology.
Designed and battle-proven by top teams, these flywheels add the rotational mass you need to turn inconsistent shots into unstoppable, long-range rockets.
Key Features
- Serious Inertia: Thick 6.2 mm mild steel dramatically increases moment of inertia for smoother spin-up and far better shot-to-shot consistency.
-
Two Proven Sizes for FTC:
- 72 mm diameter – perfect balance of weight and space
- 96 mm diameter – maximum inertia when you need extreme range
- New 4" OD Variant for FRC Robots: 101.6 mm diameter flywheel specifically engineered for FRC, with a smooth, deburred finish for clean stacking and clamping.
- No Finish – Pure Performance: Raw steel construction (expect minor surface rust over time — intentional for maximum mass at minimum cost).
Specifications & Recommendations
| Diameter | Mass | Moment of Inertia | Recommended Quantity (FTC) | Recommended Quantity (FRC 2026) |
|---|---|---|---|---|
| 72 mm | 0.186 kg (0.41 lb) | 480 g·cm² | 3x for short range · 4x for long range | — |
| 96 mm | 0.339 kg (0.75 lb) | 1550 g·cm² | 2x for short range · 3x for long range | — |
| 4" OD (101.6 mm) | 0.256 kg (0.565 lb) | 4032 g·cm² | — | 2x per shooter |
FRC 4" Variant Notes:
- Ideal for clamping to 1/2" hex axles using the SWYFT 1/2" Hex High Strength Clamping Split Hub (sold separately).
- Smooth, deburred finish for clean stacking and clamping.
- Stack multiple flywheels and clamp them all at once for easy inertia tuning.
Drop these steel flywheels onto your shooter and instantly feel the difference: tighter shot grouping and longer range. Simple, affordable, and devastatingly effective — now with a dedicated FRC variant optimized for the 2026 game.
CAD&Drawing





















