Specialist in Land Rover ® Defender Vehicle Spares and Accessories

Shock Absorbers

Air Shock Absorber
Developed originally for competitive rock crawling buggies where extreme axle articulation means everything. Terrafirma’s new 2.5” Air shocks support the weight of the vehicle, provide infinite ride height adjustability and allow massive articulation for custom vehicle builders. No more problems with coil springs dislocating or becoming coil bound restricting wheel movement. With 16” of travel the Terrafirma Air shock provides ample axle movement even for the most extreme off road competitors. The ride quality experienced with air shocks is exceptional, combined with Terrafirma hydraulic bump stops obstacles and extreme terrain can be attacked like never before. The Terrafirma Air shock is super strong 2.5” (66mm) diameter and uses a massive 1.625” (40mm) hard chromed highly polished piston shaft with the latest technology valving and seals. Air shocks are charged with high pressure Nitrogen, factory set at 150psi and adjustable between 100 and 400psi depending on the weight of the vehicle and preferred ride height. Terrafirma Air shocks are designed to be mounted vertically with the shaft at the bottom for optimum performance. It is possible to fine tune the air shocks performance to very precisely suit a given application by adjusting the oil volume and the Nitrogen pressure. For the Terrafirma air shock we have assumed an average setting based on vehicles ranging between 2000 and 3000kgs. A basic rule of thumb is as follows: Nitrogen Pressure Always set and adjust the pressure with shocks fully extended, with the vehicle on flat ground check the ride height, adjust the shock pressure in 25psi increments to achieve the correct ride height. Normal ride height should be achieved with the shock extended to around 30-40% of the shock absorbers travel. Use TFGASKIT or similar. Do not use any gas other than Nitrogen. Oil Level If the shocks bottom out too easily but the ride feels good increase the oil capacity by 20ml at a time until they no longer bottom out, be sure to release the Nitrogen pressure each time with the shocks fully extended and the vehicle supported. Oil can be added using a syringe by removing the Shrader valve. Terrafirma does not offer a mounting kit for the air shocks due to the highly customised applications they are designed for. When building an off road vehicle ensure that the top and bottom mountings are attached to load bearing frame or chassis members, remembering these shocks take the full load of the vehicle in place of a conventional spring. The amount of travel afforded by these shocks is incredible and care must be taken to ensure brake lines can extend sufficiently and no driveline binding occurs.
All Terrain Shocks
A great all rounder, the Terrafirma All Terrain shock is a favourite in any conditions and any environment. From the construction site to the motorway, running light or fully loaded, simply replacing tired old shocks or heading off-road, you can\'t go wrong. The All Terrain shocks are a tough twin tube design which allows for a large volume of oil for cooler internals and improved protection of working parts. Low pressure nitrogen keeps the oil under pressure which prevents it from foaming and creating cavitation which eventually results in heat build up and shock fade. Terrafirma All Terrain shocks are built with the largest possible fully welded mounting pins and rubber bushes for maximum strength and durability. Tough enough to handle the punishment of recreational off-roading yet refined to provide a comfortable, well balanced and controlled ride on road. Finished with a high quality deep silver paint to resist corrosion for long lasting good looks and including the smart Terrafirma All Terrain shock absorber logo. Terrafirma All Terrain shocks are the perfect replacement for existing shocks and yet can also accommodate up to 2inches (50mm) of lift using Terrafirma coil springs. 2inches longer All Terrain shocks are also available for Series 2 Discoverys.
Big Bore Expedition Shocks
Heavy trucks need heavy suspension, Terrafirma has developed the Big Bore Expedition shock specifically for fully laden Land Rovers such as overland and utility vehicles. The Big Bore Expedition shocks are designed to handle the battering experienced when travelling over rough terrain while providing stability and control with top heavy vehicles at both low and high speed. The Big Bore Expedition shock is built for strength and reliability, it is true when they say that size does matter! Everything about The Big Bore Expedition shock is massive with its 76mm diameter body, 50mm piston and of course Terrafirmas super strong 20mm double chromed shaft. The fully welded mounting points and the natural rubber bushes are the largest possible to fit Land Rovers original mounting points. The massive 76mm shock body provides ample capacity for the high performance oil necessary to keep the internal workings cool while maintaining high damping performance even when combined with the high spring rates required to carry very heavy loads. Coincidentally fitting the Big Bore expedition shocks to a light or un-laden Land Rover gives a firm, sporty handling characteristic often sought after by the more performance orientated driver. Features include: Standard length and 2 inches (50mm) longer than standard 76mm body, twin tube design 50mm internal bore and piston 20mm double chromed shaft High temperature oil filled 2.5mm outer shock tube wall thickness 14mm mounting pins
Commercial HD Shocks
Terrafirma front commercial STD travel heavy duty shock absorber for 90/110/130/D1/RRC
Hydraulic Bump Stop
Hydraulic Bump Stop 4 Inch Travel
Mega Sport Shocks
The ultimate 4x4 shock absorber, previously only associated with custom built off road competition vehicles. The Terrafirma Mega Sport shock combines the finest quality machining, specialist components and design features and is built to stand up to the punishment encountered in the harshest off road conditions. Multi stage damping provides outstanding control and the high volume of oil contained within the huge remote reservoir dissipates heat ensuring consistent performance for long periods regardless of the terrain. Constructed from bright zinc plated 52mm diameter steel tube machined to extremely high tolerances with a 46mm piston in a monotube design with Terrafirma’s customary super strong 20mm hard chromed shaft. Blue anodised machined alloy fittings complete the impressive looks. Terrafirma Mega Sport shocks can be adjusted by varying the nitrogen pressure using a gassing kit such as TFGASKIT. The shocks are factory set at 150psi for immediate fitment and can be adjusted between 100 and 200psi to suit conditions and driving style. Higher nitrogen pressure will result in increased damping giving a firmer more controlled ride. Terrafirma Mega Sport shocks can be fitted to Land Rovers using dedicated Terrafirma mounting systems and can be adjusted to suit different terrain and activities. Although the Mega Sport shock is not vehicle specific and as such will suit custom vehicle builders, unique Terrafirma mounting systems have been produced to fit these amazing shocks to Land Rover Defenders, it is also possible to fit them to Discovery 1 and Range Rover Classics with some minor modifications needed to the inner wings and panel work.
Pro Sport Shocks
It is the most popular choice of shock used for off-roading by Land Rover owners. The Terrafirma Pro Sport goes to the next level by optimising all the key features of 4x4 shock design, maximising performance, handling, strength and reliability yet still remaining great value for money. The Pro Sport is regarded by many as the benchmark shock for Land Rovers. The advantages when driving off road are remarkable as these shocks are built with hard core use in mind. Fitted with velocity sensitive valving means the shock will automatically adjust its internal damping to suit driving conditions, the harder you punish them the better they work. When it comes to the drive home you’ll really notice the superior ride quality and handling. Available in standard travel, +2“ (50mm) & +3” (75mm) the Pro Sport shocks are a super tough twin tube design with a massive 20mm shaft and 40mm piston. Low pressure nitrogen keeps the oil under pressure which prevents it from cavitating which causes shock fade, something the Pro Sport is never troubled with. Common with all Terrafirma shocks, Pro Sports are built with the largest possible fully welded mounting pins and eyes with rubber bushes for maximum strength and durability. Visually these shocks are striking and stylish, finished with a high quality deep silver paint to resist corrosion and including the smart Terrafirma Pro Sport shock absorber logo, a bright blue semi rigid plastic dust shield with embossed Terrafirma logo protects the double chromed shaft from stone damage. Terrafirma Pro Sport shocks are a big step up in performance and quality and are perfect when combined with Terrafirma coil springs to give a 2” (50mm) with a corresponding increase in wheel travel.
Remote Reservoir Shocks
Originally only seen on mega budget custom built off-road racers, remote reservoir shocks carried a price tag out of reach to all but factory supported teams. Terrafirma Remote Reservoir shocks offer a new level of performance for recreational and hard core off-roaders alike. Terrafirma Remote Reservoir shocks fit directly onto original Land Rover mountings for easy installation and can be adjusted to suit different terrain and activities. Why remote reservoir? The harder and faster you drive off-road the more heat is generated in your shocks, the temperature increase and the speed at which the shocks are trying to operate causes aeration (foaming) in the oil which leads to the deterioration in the performance of shock absorbers known as fade. Terrafirma Remote Reservoir shocks have increased oil and nitrogen capacity separated by a floating piston within the remote canister. This prevents the gas mixing with the oil at high temperatures significantly improving performance compared to conventional shocks, massively reducing fade and loss of performance. With approximately 75% greater oil capacity considerably lower operating temperatures are achieved resulting in exceptional ride quality and endurance. Terrafirma Remote Reservoir shocks can be adjusted by varying the nitrogen pressure using a gassing kit such as TFGASKIT. The shocks are factory set at 100psi for immediate fitment and can be adjusted between 60 and 200psi to suit conditions and driving style. Higher nitrogen pressure will result in increased damping giving a firmer more controlled ride. Visually these shocks are seriously impressive, mounted to the vehicle effectively upside down, designed specifically to allow reliable routing of the hose and reservoir. As always with Terrafirma the largest possible fully welded pins and eyes are used with natural rubber bushes. Finished with high quality deep silver paint to resist corrosion and including the smart Terrafirma Remote Reservoir shock absorber logo, a bright blue flexible polyurethane gaiter protects the double chromed shaft from stone damage. Built using race bred valving and similar specifications to the Pro Sport and Extreme shocks including Terrafirma\\\'s massive 20mm double chromed shaft, 40mm piston and 57mm large capacity shock body. Available 2"" (50mm) longer than standard as well as the new super long travel +5"" (125mm) option for extreme off-road use. As with the Terrafirma Extreme shock the +5"" (125mm) longer Remote Reservoir shock is constructed with pin mountings top and bottom which directly replaces the original front shock. The traditional rear top eye mount on conventional shocks will not accommodate the extreme articulation achieved with the +5"" (125mm) longer shocks. To enable a rear pin top mount shock to be fitted requires a special mounting kit TF519. The kit comprises a pair of brackets and all necessary nuts and bolts. The Terrafirma Remote Reservoir shocks are ideal for vehicles whose owners drive on \\\'full attack\\\' mode at all times. Adjustable for rock crawling, cross country and fast road simply by adjusting the nitrogen pressure.