The JL is a modern, technologically advanced 5 speed sequential box, suitable as a replacement to the incredibly popular LD-200. Retro-fitted with minimal chassis or suspension modifications, the JL offers an effective upgrade with minimal setup alterations, boosting performance to meet modern competition.
In utilising the ratios from the well proven FTR range, the JL delivers excellent reliability at a low cost and weight, together with a wide range of off-the-shelf gearing options. To ensure maximum track-time, gear ratios can be changed trackside without the need to remove the transmission from the vehicle.
Centrally mounted 4th and 5th ratios reduce shaft bending, improving component life, whilst a range of differential options are available including the advanced Powerflow™ limited-slip unit. When combined with the optional Hewland Semi-Auto System, the JL provides maximum performance within an affordable budget.
Utilised by the entire USF2000 grid, the JL has proven itself as the ideal transmission for any lightweight single-seater looking for a modern, 5 speed sequential unit.
To find out more on the JL-200, Please see below:
| Normal Application: | Entry to Medium Performance Single-Seaters |
| Case Material: | Aluminium |
| Shift Pattern: | 5 Speed Sequential with reverse |
| Selection: | - Manual Sequential - Externally operated semi-auto sequential option |
| Mounting Layout: | Rear Transaxle |
| Max. Engine Torque: | 325 Nm / 240 lbs.ft (Dependent on chosen ratio) |
| Cluster Layout: | Longitudinal cluster mounted behind the differential. Centrally located 4th/5th gears to minimise shaft bending |
| Weight: | 34.4 Kg |
| Lubrication: | Splash-type |
| Differential: | - Powerflow™ plate-type limited-slip - Multiple free differential options |
| Semi-Auto Compatibility: | Externally mounted option |
| Clients Include: | - US F2000 Series - Sprint & Hill Climb Vehicles |
| Part Number | Description | Ratio (1st) |
|---|---|---|
| LJS-221-9:31 | CROWNWHEEL AND PINION | 3.444 |
| LJS-221-12:34 | CROWNWHEEL AND PINION | 2.833 |
Layshaft Options (Integral 1st gear)
| Part Number | Description | Ratio (1st) |
|---|---|---|
| LJS-12:38-INT | LAYSHAFT (1ST GEAR) | 3.167 |
| LJS-12:35-INT | LAYSHAFT (1ST GEAR) | 2.917 |
| LJS-12:33-INT | LAYSHAFT (1ST GEAR) | 2.750 |
| LJS-12:31-INT | LAYSHAFT (1ST GEAR) | 2.583 |
| LJS-12:29-INT | LAYSHAFT (1ST GEAR) | 2.417 |
| LJS-15:31-INT | LAYSHAFT (1ST GEAR) | 2.067 |
| LJS-15:29-INT | LAYSHAFT (1ST GEAR) | 1.933 |
Hubbed Gear Options (2nd Gear)
| Part Number | Description | Ratio |
|---|---|---|
| JFR-15:40-HUB * | RATIO | 2.667 |
| JFR-14:35-HUB * | RATIO | 2.500 |
| JFR-14:33-HUB | RATIO | 2.357 |
| JFR-13:30-HUB | RATIO | 2.308 |
| JFR-15:34-HUB | RATIO | 2.267 |
| JFR-15:33-HUB | RATIO | 2.200 |
| JFR-15:32-HUB | RATIO | 2.133 |
| JFR-15:31-HUB | RATIO | 2.067 |
| JFR-15:30-HUB | RATIO | 2.000 |
| JFR-15:29-HUB | RATIO | 1.933 |
| JFR-16:30-HUB | RATIO | 1.875 |
| JFR-17:30-HUB | RATIO | 1.765 |
| JFR-17:29-HUB | RATIO | 1.706 |
| JFR-17:27-HUB | RATIO | 1.588 |
Standard Gear Options (3rd - 5th)
| FTR-15:30-STD | RATIO | 2.000 |
| FTR-15:29-STD | RATIO | 1.933 |
| FTR-16:30-STD | RATIO | 1.875 |
| FTR-17:31-STD | RATIO | 1.824 |
| FTR-15:27-STD | RATIO | 1.800 |
| FTR-17:30-STD | RATIO | 1.765 |
| FTR-15:26-STD | RATIO | 1.733 |
| FTR-17:29-STD | RATIO | 1.706 |
| FTR-16:27-STD | RATIO | 1.688 |
| FTR-15:25-STD | RATIO | 1.667 |
| FTR-16:26-STD | RATIO | 1.625 |
| FTR-17:27-STD | RATIO | 1.588 |
| FTR-16:25-STD | RATIO | 1.563 |
| FTR-17:26-STD | RATIO | 1.529 |
| FTR-16:24-STD | RATIO | 1.500 |
| FTR-17:25-STD | RATIO | 1.471 |
| FTR-18:26-STD | RATIO | 1.444 |
| FTR-16:23-STD | RATIO | 1.438 |
| FTR-19:27-STD | RATIO | 1.421 |
| FTR-18:25-STD | RATIO | 1.389 |
| FTR-19:26-STD | RATIO | 1.368 |
| FTR-17:23-STD | RATIO | 1.353 |
| FTR-18:24-STD | RATIO | 1.333 |
| FTR-19:25-STD | RATIO | 1.316 |
| FTR-20:26-STD | RATIO | 1.300 |
| FTR-18:23-STD | RATIO | 1.278 |
| FTR-19:24-STD | RATIO | 1.263 |
| FTR-20:25-STD | RATIO | 1.250 |
| FTR-21:26-STD | RATIO | 1.238 |
| FTR-18:22-STD | RATIO | 1.222 |
| FTR-19:23-STD | RATIO | 1.211 |
| FTR-21:25-STD | RATIO | 1.190 |
| FTR-23:27-STD | RATIO | 1.174 |
| FTR-19:22-STD | RATIO | 1.158 |
| FTR-21:24-STD | RATIO | 1.143 |
| FTR-24:27-STD | RATIO | 1.125 |
| FTR-19:21-STD | RATIO | 1.105 |
| FTR-24:26-STD | RATIO | 1.083 |
| FTR-18:19-STD | RATIO | 1.056 |
| FTR-25:26-STD | RATIO | 1.040 |
| FTR-24:24-STD | RATIO | 1.000 |
| FTR-25:24-STD | RATIO | 0.960 |
| FTR-26:24-STD | RATIO | 0.923 |
| FTR-27:24-STD | RATIO | 0.889 |
| Pinion Setting Jig | - | SK-2192 |
| Pinion Setting Tool | - | SK-2591 |
| Slide Hammer Kit | - | SK-2025-A |
| Tripod Removal Kit | - | SK-2025 |
| Socket | - | SK-1175-C |
| Socket | - | SK-2217 |
| Pinion Spanner | - | SK-247 |
| Fork Setting Handle | - | SK-1732-B |
| Fork Setting Jig | - | SK-2601 |
| Pinion Setting Tool | - | SK-1913-A |