Suzuki Jimny Trail Gear Transfer Box Case Gears 17% High & 87% Low Reduction Manual Transmission (05 - 18)

Suzuki Jimny 2005-2018 Trail-Gear 17% / 87% Transfer Box Reduction Gears - Manual

Upgrade the off-road capability of your Suzuki Jimny Generation 3 (2005-2018) with this Trail-Gear 17% high-range and 87% low-range transfer box reduction gear kit, specifically designed for Jimnys fitted with a 5-speed manual gearbox and the later electric push-button transfer box.

These reduction gears provide a 17% reduction in high range and a substantial 87% reduction in low range, helping compensate for larger diameter tyres while providing significantly lower crawling speeds for demanding off-road terrain.

Manufactured from high-strength, heat-treated and carburised SCM415 alloy steel, the replacement gears are designed to provide strength and durability in demanding off-road conditions.

This kit also includes a replacement speedometer gear calibrated for 29"-30" tyres, along with replacement oil seals, staking nuts and RTV silicone.

IMPORTANT: Suitable for 5-speed manual gearbox models with the electric push-button transfer box only. Not suitable for automatic gearbox vehicles or earlier lever-operated transfer boxes.

17% High Range Reduction

The 17% high-range reduction helps compensate for the increased overall gearing caused by fitting larger diameter off-road tyres.

By lowering the transfer box high-range gearing, this conversion helps restore some of the mechanical advantage lost when larger tyres are fitted, improving drivability and providing greater torque multiplication at the wheels.

• High-range reduction: 17%
• Transfer box: Electric push-button operated

Please note: High-range gearing is also used during normal road driving. This conversion will increase engine RPM at a given road speed compared with the original gearing, assuming the same tyre size.

87% Low Range Reduction

The substantial 87% low-range reduction provides significantly lower gearing for technical off-road driving, allowing the Jimny to crawl over difficult obstacles at much slower speeds.

This makes the kit particularly suitable for vehicles tackling steep climbs, rocky terrain, deep ruts and demanding off-road conditions.

• Low-range reduction: 87%
• Recommended tyre size: 29" (736mm) or larger

Benefits include:

• Significantly improved low-speed off-road control
• Greater torque multiplication at the wheels
• Reduced need to slip the clutch during technical off-road driving
• Improved control on steep climbs and descents
• Better gearing for larger diameter off-road tyres
• Greater control when manoeuvring over rocks, ruts and difficult obstacles
• Improved crawling capability in demanding off-road conditions

Replacement Speedometer Gear Included

This Trail-Gear kit includes a replacement speedometer drive gear designed to help correct the speedometer reading when running larger diameter tyres.

The supplied speedometer gear is calibrated for 29"-30" tyres (approximately 736-762mm).

This is particularly useful for Jimnys fitted with larger off-road tyres, where changes in tyre diameter can affect speedometer accuracy.

Please note: Actual speedometer accuracy can vary depending on the vehicle, tyre dimensions and other modifications.

High-Strength SCM415 Alloy Steel Gears

Trail-Gear manufactures these replacement gears from high-strength SCM415 alloy steel, which is heat-treated and carburised for durability.

The kit includes four replacement transfer box gears to provide the 17% high-range and 87% low-range reductions.

These gears are specifically designed for compatible chain-drive, electric push-button Jimny transfer boxes fitted to manual gearbox vehicles.

Features

• Manufactured by Trail-Gear
• 17% high-range reduction
• 87% low-range reduction
• High-strength SCM415 alloy steel gears
• Heat-treated and carburised gear construction
• Designed for vehicles running 29" tyres or larger
• Significantly improved low-speed off-road control
• Four replacement transfer box gears included
• Replacement speedometer gear included
• Speedometer gear calibrated for 29"-30" tyres
• Includes replacement oil seals and staking nuts
• Includes Ultra Grey RTV silicone
• Designed for 5-speed manual gearbox Jimnys
• Suitable for electric push-button transfer boxes only
• Installation instructions available

Specifications

• Manufacturer: Trail-Gear
• Vehicle: Suzuki Jimny Generation 3
• Model years: 2005-2018 (subject to transfer box type)
• Main gearbox: 5-speed manual only
• Transfer box type: Electric push-button operated, chain-drive
• Gear material: SCM415 alloy steel
• Gear treatment: Heat-treated and carburised
• High-range reduction: 17%
• Low-range reduction: 87%
• Recommended tyre size: 29" (736mm) or larger
• Speedometer gear calibration: 29"-30" tyres (736-762mm)
• Transfer box housing modification: Minor internal clearancing required

Kit Contents

This complete Trail-Gear reduction gear kit includes:

• 1 x Replacement input shaft gear
• 1 x Replacement low output gear
• 1 x Replacement sprocket output gear
• 1 x Replacement countershaft gear
• 1 x Replacement speedometer gear
• 3 x Trail-Safe Jimny transfer box input/output oil seals
• 3 x New staking nuts
• 1 x Tube of Ultra Grey RTV silicone
• Detailed installation instructions

Vehicle Fitment

Designed for Generation 3 Suzuki Jimny models fitted with a 5-speed manual gearbox and electric push-button transfer box.

• Suzuki Jimny - 2005-2018
• 5-speed manual gearbox only
• Electric push-button transfer box
• Chain-drive transfer box

IMPORTANT: This kit is for manual gearbox Jimnys with the electric push-button transfer box only. It is NOT suitable for automatic gearbox models or earlier lever-operated transfer boxes.

Please check both your main gearbox and transfer box type before ordering, particularly on vehicles near the model changeover period or those fitted with replacement transfer boxes.

Installation Information

Installation requires removal and dismantling of the transfer box to replace the original gearing.

Minor internal clearancing of the transfer box housing is required to accommodate the replacement gears, as specified by Trail-Gear.

Due to the mechanical work and housing modifications involved, professional installation or experience with transfer box rebuilding is recommended.

Installation Instructions:

Instructions Click Here

Please note: These instructions are supplied by Trail-Gear for their electric push-button Jimny transfer box reduction gear conversion. Follow the manufacturer's fitting procedure and confirm the instructions correspond to your particular kit before installation.

Important Information

• 5-speed manual gearbox models only.
• Electric push-button transfer boxes only.
• Not suitable for automatic gearbox vehicles.
• Not suitable for earlier lever-operated transfer boxes.
• High-range gearing reduced by 17%.
• Low-range gearing reduced by 87%.
• Both high-range and low-range gearing are changed by this conversion.
• Recommended for vehicles running 29" tyres or larger.
• Replacement speedometer gear calibrated for 29"-30" tyres included.
• Minor clearancing of the transfer box housing is required.
• Includes four replacement gears, speedometer gear, oil seals, staking nuts and RTV silicone.
• Professional installation or experience rebuilding transfer boxes is recommended.

Please confirm your vehicle has a 5-speed manual gearbox and the electric push-button transfer box before ordering.