When the 2020 UTV racing season started, Ronnie Anderson hadn’t gotten a long-travel RZR Pro XP built for the start of the WORCS series in January. Even though the Lucas Oil Off-Road series didn’t start until late July, Anderson stuck with his Holz Racing RZR Turbo S and finished behind eventual champion Corry Weller in the first two rounds. By the time the LOORRS series reached round six in Arizona, Ronnie had four seconds, then he absolutely dominated the three Turbo rounds at Wild Horse Pass and advanced to the last two Glen Helen rounds with a seven-point lead. Ronnie Anderson’s HRP RZR Turbo-S-Pro-XP is a unique hybrid RZR XP Turbo S with a Pro XP engine and transmission. Weller prevailed for the title, but Anderson won the last round to tie Corry’s season win record.

Ronnie Anderson warmed up for the Lucas Oil Off-Road Series at the WORCS opener at Buffalo Bill’s in his Holz Racing Products/Walker Evans Racing Polaris RZR XP Turbo S, which he upgraded with a newer Pro XP engine, transmission and clutch.


Holz Racing Products (HRP) has a complete Short-Course kit for the Polaris RZR XP1K, Turbo, Turbo S, RS1 and now Pro XP, starting at $12,400. The Short-Course kit starts with a TIG-welded, 1.75-inch, 4130 Race cage that includes an aluminum roof with wings, full doors, aluminum firewall, bed-delete kit, lowered seat mount, aluminum dash, billet steering column, window nets, radiator relocate kit with twin-fan C&R radiator and number plates. The kit also includes heavy-duty radius rods and tie-rods, trailing arms, A-arms, and a front bumper with integral torsion bar, trailing-arm guards, a rear torsion-bar kit, nerf bars, a WORCS rear bumper, and a billet motor-mount kit. Inside, it includes a Joe’s 14-inch dished steering wheel, three-bolt quick-release steering hub, and 1-inch spacer, plus a Yuasa sealed battery. Also included, HRP adds a Sparco seat and 3-inch Master Craft safety harness.

Anderson racked up four wins and four seconds in Lucas Oil’s Production Turbo class, but he had a crash in Missouri, and a mechanical failure at California’s round nine cost him the championship.

Ronnie uses the Sparco Evo seat and a five-point harness, but he runs CMI tie-rods instead of HRPs. Being a Walker Evans Racing (WER) athlete as well, Ronnie uses the optional WER 2.5 Velocity shocks ($3600 through HRP) and 15×6-inch Legend bead-lock wheels. WER has these Legends on sale for $225, and HRP has these wheels with GBC tires for $1,600. For RZR Turbo S Velocity Edition owners, WER offers a Turbo S Shock Upgrade kit that includes WER cross-over rings and sliders, Eibach dual-rate springs, new spring nuts and clips, and a full shock service with seals, oil and nitrogen, all for $2000.

Other options for the HRP Turbo S Short-Course kit that Ronnie uses are CMI billet hubs ($779,80) and heavy-duty wheel studs ($299.96), an HRP billet shifter ($119.95), and an HRP-designed wrap ($1,000).

Ronnie Anderson’s HRP RZR Turbo-S-Pro-XP is full of performance upgrades.KT Performance fabricated the exhaust and intake, and did the Stage 3 Pro XP tune with Dynojet’s Power Vision 3 and clutch weights. Walker Evans Racing upgraded the rear WER needle shocks with springs and custom valving.


Ronnie pits with Shelby Anderson at WORCS rounds, and both rely heavily on CMI Precision driveline and braking armor. Ronnie uses CMI big-brake rotors, along with CMI hubs, but he goes with Wilwood twin-piston hydraulic brake calipers on all four wheels. Ronnie prefers CMI axles over the optional $2900 RCV Pro Series II axles available through HRP. Call CMI for prices. Ronnie also uses HRP’s intercooler radiator with separate controls for fans. Race rules require a fire extinguisher. HRP’s quick-release mount is $79.95, and the extinguisher is $50. Ronnie is sponsored by BFGoodrich and runs its KR2s in sandy WORCS races, but he used Hoosier M500-compound UTV/SxS 27.5/8.0-15s in the LOORRS races.

The rear of the RZR is all included in HRP’s Short-Course kit, except for the CMI axles, hubs and big brake rotors. Factory Polaris athletes also use the military-grade wheel bearings from the MRZR.


Lucas Oil (and WORCS) rules only allow minimal engine modifications (intake, exhaust and tune), and K&T Performance did the tune on Anderson’s #752 Turbo S with Turbo Pro XP engine, clutch and transmission. K&T has Dyno Jet Power Vision 3 tuners for most UTVs for $399.99, and the Stage 2 Power package with clutch springs and weights is $649.99. Stage 3, with a high-flow, reinforced charge tube, is $999.99; racers have reported collapsed OEM charge tubes on the Pro XP, especially in hotter weather. K&T did the Pro XP exhaust and carries HMF, Gibson and MBRP systems for most UTVs for $430–$899.

Ronnie Anderson's HRP RZR Turbo-S/Pro-XP
HRP’s OEM-replacement A-arms have larger and stronger tubing and more gussets than the stock arms, and Ronnie upgrades four items—CMI axles, hubs, big brake rotors and Wilwood dual-piston brake calipers. He uses WER Velocity 2.5 shocks up front.
Ronnie Anderson's HRP RZR Turbo-S/Pro-XP
Instead of using Aim’s MX UTV digital readout, he uses the MXS1.2 Strada ($1149) with GPS08 for lap-time and tuning data, four analog sensor channels, flexible alarms, a high-contrast TFT display, and camera (and mirror-cam) integration. Check out the separate switches and fuses for the radiator and cooling fans.

One bad main at the ninth round cost Anderson the 2020 LOORRS Pro Turbo championship by only eight points, and he won four rounds, earned top-qualifier points at two rounds, and was second behind Weller or Kyle Chaney at four rounds. A first-turn crash in Missouri and a mechanical in California impacted an otherwise stellar season.


Holz Racing Products

6226 Chasteen Road

Lynden, Washington 98264

(360) 398-7006

[email protected]

CMI Precision Machining

527 Fee Ana St.

Placentia, CA 92870

(714) 528-3000

Walker Evans Racing

2304 Fleetwood Drive

Riverside, CA 92509

(951) 784-7223

KT Performance

1502 Max Hooks Road, Suite D

Groveland, FL 34736

(855) 587-3736

See the Polaris factory race team’s Pro XP here:

You might also like

Comments are closed.